Cita APA (7th ed.)

DAVIDSON JEFFERY P. (1998). ASSERTIVENESS. PRENTICE -HALL INTERNATIONAL, INC.

Cita Chicago (17th ed.)

DAVIDSON JEFFERY P. ASSERTIVENESS. NEW JERSEY,USA: PRENTICE -HALL INTERNATIONAL, INC, 1998.

Cita MLA (9th ed.)

DAVIDSON JEFFERY P. ASSERTIVENESS. PRENTICE -HALL INTERNATIONAL, INC, 1998.