Solomon, Richard H
University of California Press, 1971
Buku Teks
Chen, Jerome, author
Oxford University Press, 1967
Buku Teks
Goodman, David S. G., author
Routledge, 1994
Buku Teks
Walter, John, author
Oxford University Press, 2017
eBooks
Schwartz, Benjamin, author
Harvard University Press, 1952, 1961
Buku Teks