Dyfyniad APA

(1989). Writing For College A Practical Approach / Robert E. Yarber. Harper Collins.

Dyfyniad Arddull Chicago

Writing For College A Practical Approach / Robert E. Yarber. Harper Collins, 1989.

Dyfyniad MLA

Writing For College A Practical Approach / Robert E. Yarber. Harper Collins, 1989.

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