Cita APA

Weir, A., Chappell, J., & Kacelnik, A. (2002). Shaping of hooks in New Caledonian crows.

Citación estilo Chicago

Weir, A., J. Chappell, and A. Kacelnik. Shaping of Hooks in New Caledonian Crows. 2002.

Cita MLA

Weir, A., et al. Shaping of Hooks in New Caledonian Crows. 2002.