Catalogue of Dutch bulbs.

MLA

Catalogue of Dutch Bulbs. Haarlem: van Tubergen Zwanenburg Nurseries., 1936.

APA

(1936). Catalogue of Dutch bulbs. Haarlem: van Tubergen Zwanenburg Nurseries.

Chicago

Catalogue of Dutch Bulbs. Haarlem: van Tubergen Zwanenburg Nurseries., 1936.