Styl cytowania APA

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

Styl cytowania Chicago

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

Styl cytowania MLA

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