Gaya APA

Hilgard, E, R. et al (1971). Introduction to Psychology (Ed.1). United States of America: Harcourt Brace Jovanovich, Inc..

Gaya MLA

Hilgard, Ernest, R. et al. "Introduction to Psychology". Ed.1 United States of America: Harcourt Brace Jovanovich, Inc., 1971. Text.