Cita APA (7a ed.)

ROBERTS-PHELPS GRAHAM. (2000). SALES TRAINING GAMES. GOWER.

Cita Chicago Style (17a ed.)

ROBERTS-PHELPS GRAHAM. SALES TRAINING GAMES. U S A: GOWER, 2000.

Cita MLA (9a ed.)

ROBERTS-PHELPS GRAHAM. SALES TRAINING GAMES. GOWER, 2000.