Rideout, Vincent C.
Prentice Hall International, 1991
Buku Teks
Darwin, Charles, author
Oxford University Press, 2009
Buku Teks
Silverthorn, Dee Unglaub, author
Prentice-Hall, 2001
Buku Teks
Silverthorn, Dee Unglaub, author
Prentice-Hall, 2001
Buku Teks
Price, C.A., author
McGraw-Hill, 1970
Buku Teks