APA (7 ম সংস্করণ) উদ্ধৃতি

Ahlgren, C. E. (1968). Breeding for resistance to white pine blister rust. Quetico-Superior Wilderness Research Center.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Ahlgren, C. E. Breeding for Resistance to White Pine Blister Rust. Ely, Minn.: Quetico-Superior Wilderness Research Center, 1968.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Ahlgren, C. E. Breeding for Resistance to White Pine Blister Rust. Quetico-Superior Wilderness Research Center, 1968.