Simpson, George Gaylord, author
Yale University Press, 1967
Buku Teks
Amin Setyo Leksono, author
UB Press, 2012
Buku Teks
Tessa Gracia, author
Fakultas Psikologi Universitas Indonesia, 2013
UI - Skripsi (Membership)
Keith, Arthur Berriedale, 1879-1944, author
Watts & Co., 1947
Buku Teks
Keith, Arthur, Sir, author
Watts & Co., 1950
Buku Teks