APA (7th ed.) Citation

(1969). Porträt SPD-MdB a.D. Heinrich G. Ritzel.

Chicago Style (17th ed.) Citation

Porträt SPD-MdB A.D. Heinrich G. Ritzel. 1969.

MLA (8th ed.) Citation

Porträt SPD-MdB A.D. Heinrich G. Ritzel. 1969.

Warning: These citations may not always be 100% accurate.