APA (7th ed.) Zitazioa
Douglass, A. E., & Glock, W. S. (1934). The annual Rings of trees: Tree growth and climatic cycles. Inst.
Chicago Style (17th ed.) Zitazioa
Douglass, Andrew Ellicott, eta Waldo Sumner Glock. The Annual Rings of Trees: Tree Growth and Climatic Cycles. Washington: Inst, 1934.
MLA (9th ed.) Zitazioa
Douglass, Andrew Ellicott, eta Waldo Sumner Glock. The Annual Rings of Trees: Tree Growth and Climatic Cycles. Inst, 1934.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.