APA (7th ed.) Citation

Amrich, C. B. (1949). Directory of hobbies: The blue book of hobbyists (1st annual ed.). [publisher not identified].

Chicago Style (17th ed.) Citation

Amrich, Charles B. Directory of Hobbies: The Blue Book of Hobbyists. 1st annual ed. [Place of publication not identified]: [publisher not identified], 1949.

MLA (9th ed.) Citation

Amrich, Charles B. Directory of Hobbies: The Blue Book of Hobbyists. 1st annual ed. [publisher not identified], 1949.