Jantsch, J. (2010). Referral engine: Teaching your business to market itself. Portofolio.
Style de citation Chicago (17e éd.)Jantsch, John. Referral Engine: Teaching Your Business to Market Itself. London: Portofolio, 2010.
Style de citation MLA (9e éd.)Jantsch, John. Referral Engine: Teaching Your Business to Market Itself. Portofolio, 2010.
Attention : ces citations peuvent ne pas être correctes à 100%.