APA Zitierstil

Janzen, H. H. (2007). Greenhouse gases as clues to permanence of farmlands. Conservation biology : the journal of the Society for Conservation Biology, 21(3), 668.

Chicago Zitierstil

Janzen, H Henry. "Greenhouse Gases as Clues to Permanence of Farmlands." Conservation Biology : The Journal of the Society for Conservation Biology 21, no. 3 (2007): 668.

MLA Zitierstil

Janzen, H Henry. "Greenhouse Gases as Clues to Permanence of Farmlands." Conservation Biology : The Journal of the Society for Conservation Biology, vol. 21, no. 3, 2007, p. 668.