APA aipamena

Dixon Matthew. (2012). Challenger Sale: Taking Control of the Customer Conversation. Portfolio.

Chicago Style aipamena

Dixon Matthew. Challenger Sale: Taking Control of the Customer Conversation. London: Portfolio, 2012.

MLA aipamena

Dixon Matthew. Challenger Sale: Taking Control of the Customer Conversation. Portfolio, 2012.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.