Alderson, Wroe, author
Richard D. Irwin, 1957
Buku Teks
Howard, John A., author
Columbia University Press, 1963
Buku Teks
Taylor, Weldon Johnson, 1908-, author
South-Western Publishing, 1975
Buku Teks
Duddy, Edward, author
Mcgraw-Hill, 1953
Buku Teks
edited by Reavis Cox and Wroe Alderson
Richard D. Irwin, 1950
Buku Teks