Bakhuis, W. L. (1977). The causal organization of climax (hatching) behaviour in the domestic fowl (Gallus domesticus). Rijksuniversiteit.
Lua i Stíl Chicago (17ú heag.)Bakhuis, Walter Lewis. The Causal Organization of Climax (hatching) Behaviour in the Domestic Fowl (Gallus Domesticus). Groningen: Rijksuniversiteit, 1977.
Lua MLA (8ú heag.)Bakhuis, Walter Lewis. The Causal Organization of Climax (hatching) Behaviour in the Domestic Fowl (Gallus Domesticus). Rijksuniversiteit, 1977.
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