APA aipamena

Iowa State College. Extension Service. Iowa 4-H leader. Iowa State College, Extension Service.

Chicago Style aipamena

Iowa State College. Extension Service. Iowa 4-H Leader. Ames: Iowa State College, Extension Service.

MLA aipamena

Iowa State College. Extension Service. Iowa 4-H Leader. Iowa State College, Extension Service.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.