Peter Opsvik : Cabinets.

MLA

Opsvik, Peter, and Allis Helleland. Peter Opsvik : Cabinets. Oslo: Peter Opsvik AS, 2008.

APA

Opsvik, P., & Helleland, A. (2008). Peter Opsvik : Cabinets. Oslo: Peter Opsvik AS.

Chicago

Opsvik, Peter, and Allis Helleland. Peter Opsvik: Cabinets. Oslo: Peter Opsvik AS, 2008.