Benson, Lyman, author
D.C. Heath , 1957
Buku Teks
Diekelmann, John, author
University of Wisconsin Press, 1982
Buku Teks
Jacobs, William P., author
Cambridge University Press , 1979
Buku Teks
Weaver, John E., author
McGraw-Hill, 1938
Buku Teks
Mohr, Hans, 1930-, author
Springer-Verlag, 1995
Buku Teks