APA (7th ed.) Citation

Stein, G. (1968). Useful knowledge (Repr.). Univ. Microfilms.

Chicago Style (17th ed.) Citation

Stein, Gertrude. Useful Knowledge. Repr. Ann Arbor, Mich: Univ. Microfilms, 1968.

MLA (9th ed.) Citation

Stein, Gertrude. Useful Knowledge. Repr. Univ. Microfilms, 1968.

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