Willey, Joanne M., author
Mc Graw Hill, 2008
Buku Teks
Willey, Joanne M., author
McGraw Hil , 2014
Buku Teks
Slack, John M.
Burgess Publishers, 1971
Buku Teks
William Bawen Sarles ...[et.al.]
Harper & Row, 1956
Buku Teks
Pelczar, Michael J., author
McGraw-Hill, 1986
Buku Teks