Cita APA (7th ed.)

BISHOP, S. (2002). DEVELOP YOUR ASSERATIVENESS. KOGAN PAGE LTD.

Cita Chicago (17th ed.)

BISHOP, S. DEVELOP YOUR ASSERATIVENESS. NEW DELHI: KOGAN PAGE LTD, 2002.

Cita MLA (9th ed.)

BISHOP, S. DEVELOP YOUR ASSERATIVENESS. KOGAN PAGE LTD, 2002.