APA (7th ed.) Zitazioa
Black Book - Forest Products & Paper Industry Profit Trends (December 1979). Bernstein Institutional Services LLC.
Chicago Style (17th ed.) Zitazioa
Black Book - Forest Products & Paper Industry Profit Trends (December 1979). Bernstein Institutional Services LLC.
MLA (9th ed.) Zitazioa
Black Book - Forest Products & Paper Industry Profit Trends (December 1979). Bernstein Institutional Services LLC.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.