Gaya APA

Horton, P, B., Horton, R, L. (1977). Programmed Learning Aid For Introductory Sociology (Ed. 1). Homewood: Richard D. Irwin, inc.

Gaya MLA

Horton, Paul, B.., Horton, Robert, L.. "Programmed Learning Aid For Introductory Sociology". Ed. 1 Homewood: Richard D. Irwin, inc, 1977. Text.