Cita APA (7a ed.)

Börsch-Supan, H. (1967). Anton Schoonjans in Berlin: Helmut Börsch-Supan.

Cita Chicago Style (17a ed.)

Börsch-Supan, Helmut. Anton Schoonjans in Berlin: Helmut Börsch-Supan. [s.l.], 1967.

Cita MLA (8a ed.)

Börsch-Supan, Helmut. Anton Schoonjans in Berlin: Helmut Börsch-Supan. 1967.