Tribe, Laurence H.
W.W.Norton & Company, 1990
Buku Teks
Ross, H. Laurence (Hugh Laurence)
McGraw-Hill, 1963
Buku Teks
Burnison, Gary, 1961-
McGraw-Hill, 2012
Buku Teks
Jefferson, D.W.
London Longmans 1954
Buku Teks
Hinde, Robert A.
Oxford University Press, 2008
Buku Teks