APA (7th ed.) Citation

Hertogh, A. d. (1985). Holland bulb forcer's guide (3. ed.). Internat. Flower Bulb Centre u.a.

Chicago Style (17th ed.) Citation

Hertogh, August de. Holland Bulb Forcer's Guide. 3. ed. Hillegom u.a: Internat. Flower Bulb Centre u.a, 1985.

MLA (9th ed.) Citation

Hertogh, August de. Holland Bulb Forcer's Guide. 3. ed. Internat. Flower Bulb Centre u.a, 1985.