APA (7th ed.) Citation

Sills, D. L. (1968). International Encyclopedia of the Social Sciences: V.11: N - Per, V.12: Per - Psy. The Macmillan Co. & The Free Press.

Chicago Style (17th ed.) Citation

Sills, David L. International Encyclopedia of the Social Sciences: V.11: N - Per, V.12: Per - Psy. The Macmillan Co. & The Free Press, 1968.

MLA (8th ed.) Citation

Sills, David L. International Encyclopedia of the Social Sciences: V.11: N - Per, V.12: Per - Psy. The Macmillan Co. & The Free Press, 1968.

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