APA (7th ed.) Citation

Gaarder, T., & Hagem, O. Salpetersyredannelse i udyrket jord. Grieg [u.a.].

Chicago Style (17th ed.) Citation

Gaarder, Torbjørn, and Oscar Hagem. Salpetersyredannelse I Udyrket Jord. Bergen: Grieg [u.a.].

MLA (9th ed.) Citation

Gaarder, Torbjørn, and Oscar Hagem. Salpetersyredannelse I Udyrket Jord. Grieg [u.a.].

Warning: These citations may not always be 100% accurate.