APA

Belkin G. S., Gray J. L., . (1977). Educational psychology: an introduction. Dubuque, Iowa: W. C. Brown Co.

Chicago

Belkin Gary S, Gray Jerry L, . 1977. Educational psychology: an introduction. Dubuque, Iowa: W. C. Brown Co.

Harvard

Belkin G. S., Gray J. L., . (1977). Educational psychology: an introduction. Dubuque, Iowa: W. C. Brown Co.

MLA

Belkin Gary S, Gray Jerry L, . Educational psychology: an introduction. Dubuque, Iowa: W. C. Brown Co. 1977.