Heeks, Richard, author
Sage, 2006
Buku Teks
Beamish, Paul W., 1953-, author
Irwin, 1997
Buku Teks
edited by Daniel Frei
Sage, 1982
Buku Teks
[edited by] Leonard A. Schlesinger, Robert G. Eccles, John J. Gabarro ; with the assistance of Thomas B. Lifson, James P. Ware
McGraw-Hill, 1983
Buku Teks
Fayerweather, John
McGraw-Hill , 1960
Buku Teks