Gaya APA

Gatchel, R, J. (1989). An Introduction Health Psychology (Second Edition) . Singapore: Mc Grraw-Hill Book Co..

Gaya MLA

Gatchel, Robert, J.. "An Introduction Health Psychology (Second Edition)". Singapore: Mc Grraw-Hill Book Co., 1989. Hibah Buku Dra. Anita Lestari,.