HELLER ROBERT. (1998). MOTIVATING PEOPLE. DORLING KINDERSLEY.
Cita Chicago Style (17a ed.)HELLER ROBERT. MOTIVATING PEOPLE. LONDON: DORLING KINDERSLEY, 1998.
Cita MLA (9a ed.)HELLER ROBERT. MOTIVATING PEOPLE. DORLING KINDERSLEY, 1998.
Precaución: Estas citas no son 100% exactas.