Cita APA (7th ed.)

Ullrich de Muynck, R. (1976). Das Assertiveness-Training-Programm ATP. Pfeiffer.

Cita Chicago (17th ed.)

Ullrich de Muynck, Rita. Das Assertiveness-Training-Programm ATP. München: Pfeiffer, 1976.

Cita MLA (8th ed.)

Ullrich de Muynck, Rita. Das Assertiveness-Training-Programm ATP. Pfeiffer, 1976.