APA-referens (7:e uppl.)

Kenward, B., Rutz, C., Weir, A., & Kacelnik, A. (2006). Development of tool use in New Caledonian crows: Inherited action patterns and social influences.

Chicago-referens (17:e uppl.)

Kenward, B., C. Rutz, A. Weir, och A. Kacelnik. Development of Tool Use in New Caledonian Crows: Inherited Action Patterns and Social Influences. 2006.

MLA-referens (9:e uppl.)

Kenward, B., et al. Development of Tool Use in New Caledonian Crows: Inherited Action Patterns and Social Influences. 2006.