Loether, Herman J., author
Allyn and Bacon, 1993
Buku Teks
Runyon, Richard P., author
Addison-Wesley , 1977
Buku Teks
Lehmann, Winfred P., author
Random House, 1976
Buku Teks
Gleason, H.A., author
Henry Holt, 1958
Buku Teks
Gleason, H.A., author
Holt, Rinehart and Winston, 1955
Buku Teks