Παραπομπή APA

Helgaker, T., Jørgensen, P., & Olsen, J. (2000). Molecular electronic-structure theory. Wiley.

Παραπομπή Chicago Style

Helgaker, Trygve, Poul Jørgensen, και Jeppe Olsen. Molecular Electronic-structure Theory. New York: Wiley, 2000.

Παραπομπή MLA

Helgaker, Trygve, et al. Molecular Electronic-structure Theory. Wiley, 2000.