Pandit, Nita K., author
Wolters Kluwer Health, 2012
Buku Teks
Shell, M. Scott Michael Scott, 1978-
Cambridge University Press, 2015
Buku Teks
Richard J. Semenik, Thomas C. O'Guinn, Chris Allen, Hans Kaufmann
Wadsworth and Cengage Learning, 2012
Buku Teks
edited by Robert A. Hinde
Blackwell, 1983
Buku Teks
Kemp, David D., author
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Buku Teks