Lack, D. L. (1968). Ecological adaptations for breeding in birds. Methuen.
Dyfyniad Arddull ChicagoLack, David Lambert. Ecological Adaptations for Breeding in Birds. London: Methuen, 1968.
Dyfyniad MLALack, David Lambert. Ecological Adaptations for Breeding in Birds. Methuen, 1968.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.