APA (7th ed.) Citation

Crothers, S. M. (1969). The Book of friendship. Books for Libraries Press.

Chicago Style (17th ed.) Citation

Crothers, Samuel McChord. The Book of Friendship. Freeport, N.Y.: Books for Libraries Press, 1969.

MLA (9th ed.) Citation

Crothers, Samuel McChord. The Book of Friendship. Books for Libraries Press, 1969.