APA (7th ed.) Citation

Leenheer, L. d. (1944). Beginselen van aardkunde.

Chicago Style (17th ed.) Citation

Leenheer, L. de. Beginselen Van Aardkunde. Antwerpen, 1944.

MLA (8th ed.) Citation

Leenheer, L. de. Beginselen Van Aardkunde. 1944.

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