Banks, Ferdinand E.
Plenum Press, 1976
Buku Teks SO
edited by D.W. Pearce with the assistance of J. Rose
Macmillan, 1975
Buku Teks SO
Banks, Ferdinad E.
Plenum Press , 1976
Buku Teks SO
Artikel Jurnal
Pearce, David William, 1941-
Harvester Wheatsheaf, 1990
Buku Teks SO