Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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