APA (7th ed.) Citation

Ouden, P. d., & Boom, B. K. (1978). Manual of cultivated conifers: Hardy in the cold- and warm-temperate zone. Martinus Nijhoff.

Chicago Style (17th ed.) Citation

Ouden, P. den, and B. K. Boom. Manual of Cultivated Conifers: Hardy in the Cold- and Warm-temperate Zone. The Hague ; Boston: Martinus Nijhoff, 1978.

MLA (9th ed.) Citation

Ouden, P. den, and B. K. Boom. Manual of Cultivated Conifers: Hardy in the Cold- and Warm-temperate Zone. Martinus Nijhoff, 1978.