Haire, Mason, author
McGraw-Hill, 1964
Buku Teks
Haire, Mason, author
McGraw-Hill, 1956
Buku Teks
edited by Pieter J.D. Drenth, Henk Thierry, Charles J. de Wolff
Routledge, 1998
Buku Referensi
edited by Pieter J.D. Drenth, Henk Thierry, Charles J. de Wolff
Psychology Press, 1998
Buku Referensi
Ghiselli, Edwin E., author
McGraw-Hill, 1955
Buku Teks