by Donald R. Davis ... [et al.]
Dryden Press, 1989
Buku Teks
Vickery, B.G.
The Donnington Press, 1931
Buku Teks
Cerepak, John R., author
Prentice-Hall, 1987
Buku Teks
Niswonger, C. Rollin (Clifford Rollin), 1907-, author
South-Western Pub., Co. , 1977
Buku Teks
Stevenson, Russell A., author
Alexander Hamilton Institute, 1962
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