Ardrey, R. (1966). The territorial imperative. New York: A Delta Book.
Trích dẫn kiểu ChicagoArdrey, Robert. The Territorial Imperative. New York: A Delta Book, 1966.
MLA CitationArdrey, Robert. The Territorial Imperative. New York: A Delta Book, 1966.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.