APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (8. p.)

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