Jordan, David Starr
Linnaeus Press, 1974
Buku Teks
Jordan, John E.
Harper & Row, Publishers, 1965
Buku Teks
Kirk, David
Wadsworth, 1978
Buku Teks
Starr, Martin K., author
McGraw-Hill , 1977
Buku Teks
Starr, Martin K., author
Prentice-Hall, 1981
Buku Teks