Cita APA

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

Citación estilo Chicago

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

Cita MLA

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