The Encyclopaedia of animal behaviour and biology
edited by Peter Slater and R. McNeill Alexander
Grolier International, 1986
 Buku Referensi
The domestic cat : the biology of its behaviour
Cambridge University Press, 2014
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Brain &​ behaviour : revisiting the classic studies
edited by: Bryan Kolb, Ian Whishaw
SAGE Publications, 2017
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Angle, Paul M
The Nation Divided
Fawcett Publications,Inc, 1960
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Mader, Sylvia S.
Biology
McGraw-HIll, 1996
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