Cita APA (7th ed.)

Jantsch, J. (2010). Referral engine: Teaching your business to market itself. Portofolio.

Cita Chicago (17th ed.)

Jantsch, John. Referral Engine: Teaching Your Business to Market Itself. London: Portofolio, 2010.

Cita MLA (9th ed.)

Jantsch, John. Referral Engine: Teaching Your Business to Market Itself. Portofolio, 2010.