Cash, P. (1988). How to develop and write a research paper (2nd ed.). Arco.
Dyfyniad Arddull ChicagoCash, Phyllis. How to Develop and Write a Research Paper. 2nd ed. New York: Arco, 1988.
Dyfyniad MLACash, Phyllis. How to Develop and Write a Research Paper. 2nd ed. Arco, 1988.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.