APA-referens (7:e uppl.)

Nyström, K. G. K. (1999). Foraging in relation to aspects of morphology, body condition, reproduction, and habitat variability in three bird species. Göteborg University, Faculty of Natural Sciences.

Chicago-referens (17:e uppl.)

Nyström, Kjell Gunnar Kenneth. Foraging in Relation to Aspects of Morphology, Body Condition, Reproduction, and Habitat Variability in Three Bird Species. Göteborg: Göteborg University, Faculty of Natural Sciences, 1999.

MLA-referens (8:e uppl.)

Nyström, Kjell Gunnar Kenneth. Foraging in Relation to Aspects of Morphology, Body Condition, Reproduction, and Habitat Variability in Three Bird Species. Göteborg University, Faculty of Natural Sciences, 1999.