Rae, Wesley D.
Twayne, 1967
Buku Teks
Clark, Thomas D.
Oxford University Press, 1961
Buku Teks SO
Thomas, Kenneth D.
[publisher not identified], [date of publication not identified]
Buku Klasik
Michael D. Brown
Ann Arbor Science Publishers, 1981
Buku Teks
Thomas D.Brock, Michael T. Madigan
Pearson Benjamin Cummings, 2009
Buku Teks