APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (8e ed.) Bronvermelding

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

Let op: Deze citaties zijn niet altijd 100% accuraat.