Lilienfeld, David E., author
Harper & Row , 1953
Buku Teks
Link, Arthur S., author
Alfred A. Knopf, 1963
Buku Teks
Nichols, Jeannette P., author
D. Appleton-Century, 1943
Buku Teks
Bannon, John Francis, author
McGraw-Hill, 1952
Buku Teks
Dukes, Paul, author
Routledge, 2000
Buku Teks