Rude, Robert T., 1942-, author
Prentice-Hall, 1986
Buku Teks
by Martha Dallmann ... [et al.]
Holt, Rinehart and Winston, 1982
Buku Teks
Capron, H.L., author
The Benjamin / Cumming Publishing Company Inc., 1989
Buku Teks
Tower, Ralph B., author
Prentice-Hall, 1991
Buku Teks
McCormick, Kathleen, author
Manchester University Press, 1994
Buku Teks