APA (7th ed.) Citation

Gellert, G. (1967). Mathematik. Enzyklopädie.

Chicago Style (17th ed.) Citation

Gellert, G. Mathematik. Leipzig: Enzyklopädie, 1967.

MLA (8th ed.) Citation

Gellert, G. Mathematik. Enzyklopädie, 1967.

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