APA (7th ed.) Citation

Wiley, E., Martel, C., & Perley, C. W. C. W. (1915). Classification. Literature, subclasses PN, PR, PS, PZ. U. S. Government Printing Office.

Chicago Style (17th ed.) Citation

Wiley, Edwin, Charles Martel, and Clarence W. Clarence Warner Perley. Classification. Literature, Subclasses PN, PR, PS, PZ. Washington: U. S. Government Printing Office, 1915.

MLA (9th ed.) Citation

Wiley, Edwin, et al. Classification. Literature, Subclasses PN, PR, PS, PZ. U. S. Government Printing Office, 1915.