Fisher, Ronald C.
Routledge, 2016
Buku Teks SO
Fisher, Ronald C.
Routledge, 2022
eBooks
Fisher, Ronald C.
Scott, Foresman, 1988
Buku Teks SO
Carr, Robert K.
University of Oklahoma Press, 1937
Buku Teks
Gelfand, M. David
West Publishing, 1986
Buku Teks