Παραπομπή APA

Lehr , R. E., & Marchand , A. P. (1972). Orbital symmetry: A problem solving approach. Academic press.

Παραπομπή Chicago Style

Lehr , Ronad E., και Alan P. Marchand. Orbital Symmetry: A Problem Solving Approach. New York: Academic press, 1972.

Παραπομπή MLA

Lehr , Ronad E., και Alan P. Marchand. Orbital Symmetry: A Problem Solving Approach. Academic press, 1972.