Eastman, Susan Tyler, author
Wadsworth, 1985
Buku Teks
Orlik, Peter B., author
Allyn & Bacon, 1994
Buku Teks
Anderson, Richard C., author
McGraw-Hill, 1960
Buku Teks
Swallow, Lisa, author
Wiley Publishing, Inc., 2009
Buku Teks
edited by Roodney A. Ellis
Routledge, Taylor & Francis Group, 2009
Buku Teks