APA (7 ম সংস্করণ) উদ্ধৃতি

Christensen, B. (1961). Studies on cyto-taxonomy and reproduction in the Enchytraeidae: With notes on parthenogenesis and polyploidy in the animal kingdom. Berlingska Boktryckeriet.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Christensen, Bent. Studies on Cyto-taxonomy and Reproduction in the Enchytraeidae: With Notes on Parthenogenesis and Polyploidy in the Animal Kingdom. Lund: Berlingska Boktryckeriet, 1961.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Christensen, Bent. Studies on Cyto-taxonomy and Reproduction in the Enchytraeidae: With Notes on Parthenogenesis and Polyploidy in the Animal Kingdom. Berlingska Boktryckeriet, 1961.