Dyfyniad APA

Lester, J. D. (1993). Writing research papers: A complete guide (7th ed.). Harper and Collins.

Dyfyniad Arddull Chicago

Lester, James D. Writing Research Papers: A Complete Guide. 7th ed. New york: Harper and Collins, 1993.

Dyfyniad MLA

Lester, James D. Writing Research Papers: A Complete Guide. 7th ed. Harper and Collins, 1993.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.