APA (7th ed.) Citation

Widmer, J. (2006). The penguin careers guide: Thirteenth edition. Penguin Books.

Chicago Style (17th ed.) Citation

Widmer, Jan. The Penguin Careers Guide: Thirteenth Edition. London: Penguin Books, 2006.

MLA (9th ed.) Citation

Widmer, Jan. The Penguin Careers Guide: Thirteenth Edition. Penguin Books, 2006.