Dyfyniad APA

Block, J. A., & Betrus, M. (1999). 101 best cover letters. McGraw-Hill.

Dyfyniad Arddull Chicago

Block, Jay A., and Michael Betrus. 101 Best Cover Letters. New York: McGraw-Hill, 1999.

Dyfyniad MLA

Block, Jay A., and Michael Betrus. 101 Best Cover Letters. McGraw-Hill, 1999.

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