Gillette, J. M. 1., & Reinhardt, J. M. (1933). Current social problems. American book company.
Dyfyniad Arddull ChicagoGillette, John Morris 1866, and James Melvin Reinhardt. Current Social Problems. New York, Cincinnati [etc]: American book company, 1933.
Dyfyniad MLAGillette, John Morris 1866, and James Melvin Reinhardt. Current Social Problems. American book company, 1933.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.