Hollandsche zaadhandel.

MLA

Zwaan, C. Hollandsche Zaadhandel. Mechelen: Hollandsche zaadhandel NV, 1942.

APA

Zwaan, C. (1942). Hollandsche zaadhandel. Mechelen: Hollandsche zaadhandel NV.

Chicago

Zwaan, C. Hollandsche Zaadhandel. Mechelen: Hollandsche zaadhandel NV, 1942.