Ouden, P. d., & Boom, B. K. (1982). Manual of cultivated conifers: Hardy in the cold-and warm-temperate zone (3rd ed.). M. Nijhoff.
Chicago Style (17th ed.) CitationOuden, P. den, and B. K. Boom. Manual of Cultivated Conifers: Hardy in the Cold-and Warm-temperate Zone. 3rd ed. The Hague: M. Nijhoff, 1982.
MLA (9th ed.) CitationOuden, P. den, and B. K. Boom. Manual of Cultivated Conifers: Hardy in the Cold-and Warm-temperate Zone. 3rd ed. M. Nijhoff, 1982.
Warning: These citations may not always be 100% accurate.