Fletcher, Glenn, author
Wm. C. Brown, 1994
Buku Teks
Kraut, Edgar A., author
Dover Publication, Inc, 2015
Buku Teks
Dalven, Richard
The McGraw-Hill, 1998
Buku Teks
Hassani, Sadri, author
Allyn and Bacon, 1991
Buku Teks
Mathews, Jon, author
W.A. Benjamin, 1965
Buku Teks