APA (7th ed.) Zitazioa
Blaney, D. B. Tips for promoting youth Philately.
Chicago Style (17th ed.) Zitazioa
Blaney, Dorothy B. Tips for Promoting Youth Philately.
MLA (9th ed.) Zitazioa
Blaney, Dorothy B. Tips for Promoting Youth Philately.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.