Christensen, C. Roland, author
Harvard University, 1953
Buku Teks
McLarney, William J., author
Richard D. Irwin, 1961
Buku Teks
Holden, Paul E., author
McGraw-Hill, 1968
Buku Teks
Burger, Chester, author
Macmillan, 1964
Buku Teks
Stryker, Perrin, editor
Harper & Row, [date of publication not identified]
Buku Teks