Gaya APA

Spiro, Rosann L., Rich, Gregory A., Stanton, William J.. (2008). Management of a sales force twelfth edition (Twelfth edition). Boston: McGraw-Hill/Irwin.

Gaya Chicago

Spiro, Rosann L., Rich, Gregory A., Stanton, William J.. Management of a sales force twelfth edition. Twelfth edition Boston: McGraw-Hill/Irwin, 2008. MM.

Gaya MLA

Spiro, Rosann L., Rich, Gregory A., Stanton, William J.. Management of a sales force twelfth edition. Twelfth edition Boston: McGraw-Hill/Irwin, 2008. MM.

Gaya Turabian

Spiro, Rosann L., Rich, Gregory A., Stanton, William J.. Management of a sales force twelfth edition. Twelfth edition Boston: McGraw-Hill/Irwin, 2008. MM.