APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Helgaker, Trygve, Poul Jorgensen, and Jeppe Olsen. Molecular Electronic-structure Theory. Chichester New York: Wiley, 2000.

MLA (8th ed.) Citation

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