Gaya APA

Mache, C, M, C. (2007). The four kinds of sales people.-- (Cet. 1.--). New Jersey: John Wiley and Sons.

Gaya MLA

Mache, Chuck, Mache,, Chuck. "The four kinds of sales people.--". Cet. 1.-- New Jersey: John Wiley and Sons, 2007. Buku.