Παραπομπή APA

Davidson, N., & Gulick, F. (1976). Abstract algebra, an active learning approach. Houghton Mifflin.

Παραπομπή Chicago Style

Davidson, Neil, και Fraces Gulick. Abstract Algebra, an Active Learning Approach. Atlanta: Houghton Mifflin, 1976.

Παραπομπή MLA

Davidson, Neil, και Fraces Gulick. Abstract Algebra, an Active Learning Approach. Houghton Mifflin, 1976.