Citazione APA

Helgaker, T., Jørgensen, P., & Olsen, J. (2012). Molecular electronic-structure theory. John Wiley & sons Ltd.

Stile di citazione Chicago

Helgaker, Trygve, Poul Jørgensen, e Jeppe Olsen. Molecular Electronic-structure Theory. Chichester: John Wiley & sons Ltd, 2012.

Citazione MLA

Helgaker, Trygve, et al. Molecular Electronic-structure Theory. John Wiley & sons Ltd, 2012.