O'Brien, J., & Srivastava, S. (1995). Modern portfolio theory. South-Western College Pub..
Dyfyniad Arddull ChicagoO'Brien, John, and Sanjay Srivastava. Modern Portfolio Theory. Cincinnati, Ohio: South-Western College Pub., 1995.
Dyfyniad MLAO'Brien, John, and Sanjay Srivastava. Modern Portfolio Theory. South-Western College Pub., 1995.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.