APA (7th ed.) Citation

Gellert, W. (1963). Natur. Verl. Enzyklopädie.

Chicago Style (17th ed.) Citation

Gellert, Walter. Natur. Leipzig: Verl. Enzyklopädie, 1963.

MLA (9th ed.) Citation

Gellert, Walter. Natur. Verl. Enzyklopädie, 1963.

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