Orto, Arthur E. Dell, editor
Macmillan Lib., 1995
Buku Referensi
Barker, Roger A., author
Psychology Press, 1999
Buku Teks
edited by John A. Downey ... [and others]
Butterworth-Heinemann , 1994
Buku Teks
edited by John A. Doeney ... [and others]
Butterworth-Heinemann, 1994
Buku Teks
Frank R. Noyes, editor
[Springer, ], 2012
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