APA (7th ed.) Citation

Hamolsky, S. L. (1955). Improve your English conversation. American Book.

Chicago Style (17th ed.) Citation

Hamolsky, Sidney L. Improve Your English Conversation. New York, [etc.]: American Book, 1955.

MLA (9th ed.) Citation

Hamolsky, Sidney L. Improve Your English Conversation. American Book, 1955.