Chance, Don M.
Thomson, 2008
Buku Teks
Chance, Don M.
South-Western Cengage Learning, 2013
Buku Teks
Choudhry, Moorad
Butterworth-Heinemann, 2013
eBooks
Whitehead, Alfred North, 1861-1947
Oxford University Press, 1969
Buku Teks SO
Martin, Peter Graeme
Prentice-Hall, 1991
Buku Teks