edited and with Introductions by Paul E. Sigmund
Frederick A. Praeger, 1967
Buku Teks
Von der Mehden, Fred R., author
Prentice-Hall, 1969
Buku Teks
Von der Mehden, Fred R., author
Prentice-Hall, 1964
Buku Teks
Gamer, Robert E., author
Allyn and Bacon, 1976
Buku Teks
Knudson, Harry R.
SAddison-Wesley Pub. Co., 1967
Buku Teks