Sage, Linda C.
Academic Press, 1992
Buku Teks
Smith, Harry, author
McGraw-Hill , 1975
Buku Teks
edited by Temple C. Patton
Wiley, 1973
Buku Referensi
edited by Christopher Hanes, Susan Wolcott
Emerald, 2016
eBooks
edited by Luca Fiorito, Scott Scheall, Carlos Eduardo Suprinyak
Emerald, 2016
eBooks