Παραπομπή APA

Marton, L., & Hornyak, W. F. (1969). Problems and solutions for students. Academic Press.

Παραπομπή Chicago Style

Marton, L., και William F. Hornyak. Problems and Solutions for Students. New York: Academic Press, 1969.

Παραπομπή MLA

Marton, L., και William F. Hornyak. Problems and Solutions for Students. Academic Press, 1969.