McManus, Patrick F., author
Henry Holt, 1987
Buku Teks
Tata McGraw-Hill, 1998
Buku Teks
Webster, Jean, author
Buku Katta, 2021
Buku Teks
Phillips, Charles F., author
University of North Carolina , 1963
Buku Teks
Knorr, K.E., author
Stanford University Press, 1945
Buku Teks