APA (7th ed.) Zitazioa
Wharton, M. E., & Barbour, R. W. (1973). Trees & shrubs of Kentucky. The University Press of Kentucky.
Chicago Style (17th ed.) Zitazioa
Wharton, Mary E., eta Roger W. Barbour. Trees & Shrubs of Kentucky. Lexington, Kentucky: The University Press of Kentucky, 1973.
MLA (9th ed.) Zitazioa
Wharton, Mary E., eta Roger W. Barbour. Trees & Shrubs of Kentucky. The University Press of Kentucky, 1973.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.