APA (7th ed.) Citation

Platts (Firm), Frank, C., & LeFevre, E. J. (2012). U.S. coal activity (2012 ed.). Platts.

Chicago Style (17th ed.) Citation

Platts (Firm), Claude Frank, and Erin John LeFevre. U.S. Coal Activity. 2012 ed. [U.S.]: Platts, 2012.

MLA (8th ed.) Citation

Platts (Firm), et al. U.S. Coal Activity. 2012 ed. Platts, 2012.