Barr, Stephen, author
Thomas Y. Crowel, 1964
Buku Teks
James, I.M., author
Springer-Verlag , 1984
Buku Teks
Murdeshwar, Mangesh G.
Wiley Eastern, 1983
Buku Teks
Greever, John, author
Brooks/Cole, 1969
Buku Teks
Croom, Fred H.
Sounders College , 1989
Buku Teks