APA (7th ed.) Citation

Eliassen, K. O., Grøtta, M., & Valeur, P. S. Naturstudier. Scandinavian University Press.

Chicago Style (17th ed.) Citation

Eliassen, Knut Ove, Marit Grøtta, and Peter Svare Valeur. Naturstudier. Scandinavian University Press.

MLA (9th ed.) Citation

Eliassen, Knut Ove, et al. Naturstudier. Scandinavian University Press.