by edited by David F. Heathfield
Macmillan, 1976
Buku Teks
Kuh, Edwin, author
North-Holland Publishing, 1973
Buku Teks
Roberts, A.
Pergamon Press, 1981
Buku Teks
editors, H.S.W. Massey, E.W. McDaniel, Benjamin Bederson
Academic Press, 1982
Buku Teks
Blanchard, Olivier, author
Pearson, 2009
Buku Teks