Trecker, Harleigh B., author
Association Press, 1971
Buku Teks
Fischer, Joel, author
McGraw-Hill, 1978
Buku Teks
Jansson, Bruce S., author
Brooks/Cole; cengage learning, 2009
Buku Teks
University of Missouri Press, 1970
Buku Teks
Drisko, James W., author
Springer, 2012
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