Hzn, D. B. (1972). Seedlings of some tropical trees and shrubs mainly of South East Asia. Centre for Agricultural Publishing and Documentation.

Hzn, D. Burger. Seedlings of Some Tropical Trees and Shrubs Mainly of South East Asia. Wageningen: Centre for Agricultural Publishing and Documentation, 1972.

Hzn, D. Burger. Seedlings of Some Tropical Trees and Shrubs Mainly of South East Asia. Centre for Agricultural Publishing and Documentation, 1972.