Fisher, Ronald C.
Scott, Foresman, 1988
Buku Teks
Fisher, Ronald C.
Routledge, 2016
Buku Teks
Fisher, Ronald C.
Routledge, 2022
eBooks
Hansen, Alvin Harvey, 1887-1975
George Allen and Unwin, 1944
Buku Teks
Gelfand, M. David
West Publishing, 1986
Buku Teks