By Collins Longman
By Collins Longman, Scoffham, Stephen, Lewis, Shirley
By Estrada, Francisco
By Collins Longman, Scoffham, Stephen, Bridge, Colin, Jewson, Terry
By Cooper, John
By Young, Peter, Rose, John
By Schonell, Fred J., Flowerdew, Phyllis, Phyllis Flowerdew
By White, G.R.
By Norman J. Bull, R.J. Ferris, Bull, Norman J., Ferris, R.J.
By Schools Council
By Jamieson, B.
By Aronson, Elliot, etc., Akert, Robert M., Wilson, Timothy D.
By Asheghian, Parviz, Ebrahimi, Bahman
By Dougherty, James E., Pfaltzgraff, Robert L., Paltzgraff, Robert L.
By Herrmann, Heinz
By Kervin, John
By Lipsey, Richard G, Steiner, Peter O, Purvis, Douglas D
By Mussen, Paul Henry, Conger, John Janeway, Kagan, Jerome, Huston, Aletha Carol
By Singer, Andrew, Singer, Ferdinand L.
By Walsh, Professor Anthony
By Kapit, W., Elson, L. M.
By Clark, John W., etc., Viessman, Warren, Hammer, Mark J.
By Lynn, Steven
By Harris, Marvin
By Thygerson, Kenneth J.
By Carter, Robert, Zvesper, John, Maidment, Richard
By Tierney, John
By Marshall, Dennis