Muller, Herbert J.
Oxford University Press , 1953
Buku Teks
Brinton, Crane, 1898-1968, author
Prentice-Hall, 1960
Buku Teks
Brinton, Crane, 1898-1968, author
Prentice-Hall, 1955
Buku Teks
McKay, John P., author
Houghton Miffiln, 1984
Buku Teks
Muller, Herbert J.
A Mentor Books, 1957
Buku Teks