edited by Philip R. Cateora and Lee Richardson
Appleton-Century-Crofts, 1967
Buku Teks
Clark, Fred E.
MacMillan Co., 1931
Buku Teks
Westing, John Howard, author
Prentice-Hall, 1957
Buku Teks
McNair, Malcolm P., author
McGraw-Hill, 1949
Buku Teks
McNair, Malcolm P., author
McGraw-Hill, 1956
Buku Teks