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CHEM 302: Chemical Information Literacy and Communications: Citations

CHEM 302

Class Guide: Resources for Research

ACS Citation Examples

In-Text Citations

In ACS publications, you may cite references in text in three ways:

1. By superscript numbers, which appear outside the punctuation if the citation applies to a whole sentence or clause.

  • Oscillation in the reaction of benzaldehyde with oxygen was reported previously.3

2. By italic numbers in parentheses on the line of text and inside the punctuation.

  • The mineralization of TCE by a pure culture of a methane-oxidizing organism has been reported (6).

3. By author name and year of publication in parentheses inside the punctuation (known as author–date).

  • The primary structure of this enzyme has also been determined (Finnegan et al., 2004).

In all three systems, the author’s name may be made part of the sentence. In such cases, in the author–date system, place only the year in parentheses.

  • The syntheses described by Fraser8 take advantage of carbohydrate topology.
  • Jensen (3) reported oscillation in the reaction of benzaldehyde with oxygen.
  • According to Harris (2003), drug release is controlled by varying the hydrolytic stability of the ester bond.




Caruso, R. A.; Susha, A.; Caruso, F. Multilayered Titania, Silica, and Laponite Nanoparticle Coatings on Polystyrene Colloidal Templates and Resulting Inorganic Hollow Spheres. Chem. Mater. 2001, 13, 400–409. 

Yes, the year of publication is bolded for periodicals, but NOT for other resources.

Edited Book

Almlof, J.; Gropen, O. Relativistic Effects in Chemistry. In Reviews in Computational Chemistry; Lipkowitz, K. B., Boyd, D. B., Eds.; VCH: New York, 1996; Vol. 8, pp 206–210. 

Chapter (Online Book)

Oleksyn, B. J.; Stadnicka, K.; Sliwinski, J. Structural Chemistry of Enamines: A Statistical Approach. In The Chemistry of Enamines [Online]; Rappoport, Z., Ed.; The Chemistry of Functional Groups; Patai, S., Rappoport, Z., Series Eds.; Wiley & Sons: New York, 1994; Chapter 2, pp 87–218. summary/109560980/SUMMARY (accessed April 24, 2005).

Online Encyclopedias

Alkanolamines from Nitro Alcohols. Kirk-Othmer Encyclopedia of Chemical Technology [Online]; Wiley & Sons, Posted March 14, 2003. articles/alkaboll.a01/frame.html (accessed Nov 7, 2004).

For more details, see the American Chemical Society link below. 

American Chemical Society Citation Style


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