Hodges, John C.
Harcourt, Brace & World, 1962
Buku Teks
Hodges, John C.
Harcourt Brace Jovanovich, 1972
Buku Teks
Heffernan, James A.W.
W.W. Norton & Company, 1986
Buku Referensi
Asa S. Knowles, editor-in-chief.
McGraw-Hill, 1970
Buku Referensi
Heffernan, James A. W.
W.W. Norton & Company, 1990
Buku Referensi