APA (7th ed.) Citation

Harper, L. (2015). How to write an op-ed piece. The Rosen Publlishing Group, Inc..

Chicago Style (17th ed.) Citation

Harper, Leslie. How to Write an Op-ed Piece. New York: The Rosen Publlishing Group, Inc., 2015.

MLA (9th ed.) Citation

Harper, Leslie. How to Write an Op-ed Piece. The Rosen Publlishing Group, Inc., 2015.

Warning: These citations may not always be 100% accurate.