APA aipamena

Harveson. Woody Plants of the Big Bend and Trans-Pecos. Texas A&M University Press.

Chicago Style aipamena

Harveson. Woody Plants of the Big Bend and Trans-Pecos. Texas A&M University Press.

MLA aipamena

Harveson. Woody Plants of the Big Bend and Trans-Pecos. Texas A&M University Press.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.