Dyfyniad APA

Wallraff, H., Chappell, J., & Guilford, T. (1999). The roles of the sun and the landscape in pigeon homing.

Dyfyniad Arddull Chicago

Wallraff, H., J. Chappell, and T. Guilford. The Roles of the Sun and the Landscape in Pigeon Homing. 1999.

Dyfyniad MLA

Wallraff, H., et al. The Roles of the Sun and the Landscape in Pigeon Homing. 1999.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.