APA (7th ed.) Citation

Seligman, E. R. (1959). Encyclopaedia of the social sciences. Macmillan.

Chicago Style (17th ed.) Citation

Seligman, Edwin R.A. Encyclopaedia of the Social Sciences. New York: Macmillan, 1959.

MLA (9th ed.) Citation

Seligman, Edwin R.A. Encyclopaedia of the Social Sciences. Macmillan, 1959.

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