Bureau of Naval Personnel
Coles, 1980
Buku Teks
Ramey, Robert L.
Belmont: Wadsworth, 1963
Buku Teks
Grob, Bernard, author
McGraw-Hill, 1984
Buku Teks
Gibilisco, Stan, 1953-, author
McGraw-Hill, 2012
Buku Teks
Grob, Bernard, author
McGraw-Hill, 1977
Buku Teks