APA (7th ed.) Citation

Unsöld, A. (1958). Max Planck. Hirt.

Chicago Style (17th ed.) Citation

Unsöld, Albrecht. Max Planck. Kiel: Hirt, 1958.

MLA (9th ed.) Citation

Unsöld, Albrecht. Max Planck. Hirt, 1958.

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