APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

Gellert, Walter. Natur. Enzyklopädie, 1963.

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