APA (7th ed.) Citation

Clemens, C. (1942). Young Sam Clemens (1. ed.). Tebbetts.

Chicago Style (17th ed.) Citation

Clemens, Cyril. Young Sam Clemens. 1. ed. Portland, Me: Tebbetts, 1942.

MLA (9th ed.) Citation

Clemens, Cyril. Young Sam Clemens. 1. ed. Tebbetts, 1942.