APA (7th ed.) Citation

Wittig. (1977). Schaum's outline of theory and problems of introduction to psychology. McGraw-Hill.

Chicago Style (17th ed.) Citation

Wittig. Schaum's Outline of Theory and Problems of Introduction to Psychology. New York: McGraw-Hill, 1977.

MLA (8th ed.) Citation

Wittig. Schaum's Outline of Theory and Problems of Introduction to Psychology. McGraw-Hill, 1977.