Radford, J.D., author
Macmillan, 1972
Buku Teks
by C. Canby Balderston ... [et al.]
Prentice-Hall, 1956
Buku Teks
Hempel, Edward H., author
McGraw-Hill, 1950
Buku Teks
Hopp, Wallace J., author
McGraw-Hill, 2000
Buku Teks
Roscoe, Edwin Scott, author
Richard D. Irwin, 1955
Buku Teks