APA (7th ed.) Citation

Verrill, A. H. (1950). Shell collector's handbook. Putnam.

Chicago Style (17th ed.) Citation

Verrill, Alpheus Hyatt. Shell Collector's Handbook. New York: Putnam, 1950.

MLA (9th ed.) Citation

Verrill, Alpheus Hyatt. Shell Collector's Handbook. Putnam, 1950.

Warning: These citations may not always be 100% accurate.