Oxford University Press, 1992
Buku Teks
Edited for the American Booksellers Association by Charles B. Anderson and G. Roysce Smith
Harmony Books, 1974
Buku Teks SO
D. Van Nostrand Company, 1961
Buku Teks SO
Behavioral Publ., 1971
Buku Teks
Anderson, John D.
McGraw-Hill, 1985
Buku Teks