Anthony, Robert N. (Robert Newton), 1916-2006, author
Harvard University, 1952
Buku Teks
Holden, Paul E., author
McGraw-Hill, 1951
Buku Teks
Lawrence L. Bethel ... [et al.]
McGraw-Hill, 1945
Buku Teks
Bethel, Lawrence L., author
McGraw-Hill Kogakusha, 1971
Buku Teks
by James L. Riggs ... [et al.]
McGraw-Hill, 1979
Buku Teks