For more information, see the ACS Style Guide, pp 307-309.
Omit parts of the citation that do not apply: for example, not every conference proceeding will have assigned editors.
Author 1; Author 2; Author 3; etc. Title of Presentation. In Title of the Collected Work, Proceedings of the Name of the Meeting, Location, Full Date(s); Editor 1, Editor 2, etc., Eds.; Publisher: Place of Publication, Year; Abstract Number, Pagination.
Author 1; Author 2; Author 3; etc. Title of Presentation. Title of the Collected Work, Proceedings of the Name of the Meeting, Location, Full Date(s); Publisher: Place of Publication, Year; Abstract Number, Pagination.
Winstein, S. In University Chemical Education, Proceedings of the International Symposium on University Chemical Education, Frascati (Rome), Italy, October 16-19, 1969; Chisman, D. G.. Ed.; Butterworths: London, 1970.
Kaplan, L.J.; Selder, A. Books of Abstracts, 213th ACS National Meeting, San Francisco, CA, April 13-17, 1997; American Chemical Society: Washington, DC, 1997; CHED-824.
For more information, see the ACS Style Guide, p 314.
Author 1; Author 2; etc. Title of Report or Bulletin; Technical Report or Bulletin Number; Publisher: Location, Date; Pagination.
Crampton, S.B.; McAllaster, D. R. Collision and Motional Averaging Effects in Cryogenic Atomic Hydrogen Masers; WMC-AFOSR-002; NTIS: Springfield, VA, 1983.