Bodner, George M.
John Wiley & Sons, 1995
Buku Teks
Sackheim, George I.
Macmillan, 1977
Buku Teks
Pimentel, George C.
Holden-Day, 1971
Buku Teks
Oxtoby, David W.
Thomson, Brooks/Cole, 2003
Buku Teks
Seager, Spencer L.
Scott, Forestman and Company, 1973
Buku Teks