Hayes, Nicky
Psychology in perspective
Macmillan Press, 1995
Buku Teks
The Press in perspective
Editor by Ralph D. Casey
Louisiana State University, 1963
Buku Teks
Elkins, James
The poetics of perspective
Cornell University Press, 1994
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A global perspective
Artikel Jurnal
Charles
A computer perspective
Harvard University Press, 1973
Buku Teks SO