Hodges, Luther H.
Prentice-Hall, 1963
Buku Teks
Rubin, Seymour J.
Harper & Row, 1966
Buku Teks
Burlingame, Roger
Alfred A. Knopf, 1960
Buku Teks
Murray, Alexander
Oxford University Press, 2016
eBooks
King, Martin Luther
Harper & Row Publhers, 1968
Buku Teks