APA (7th ed.) Citation

Sills, D. L. (1968). International Encyclopedia of the Social Sciences: V. 5: Elec - Freq, V. 6: Freu - Hume. The Macmillan Co. & The Free Press.

Chicago Style (17th ed.) Citation

Sills, David L. International Encyclopedia of the Social Sciences: V. 5: Elec - Freq, V. 6: Freu - Hume. The Macmillan Co. & The Free Press, 1968.

MLA (8th ed.) Citation

Sills, David L. International Encyclopedia of the Social Sciences: V. 5: Elec - Freq, V. 6: Freu - Hume. The Macmillan Co. & The Free Press, 1968.

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