McLeod, T.S., author
Gower Press, 1971
Buku Teks
Gerstenfeld, Arthur
California Addison-Wesley Publishing , 1970
Buku Teks
Elsevier, 1973
Buku Teks
edited by Joseph F. McCloskey, Florence N. Trefethen
John Hopkins Press, 1954
Buku Teks
Chorafas, Dimitris N., author
Reinhold Publishing Corporation, 1958
Buku Teks