Citazione APA

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

Stile di citazione Chicago

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

Citazione MLA

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

Attenzione: Queste citazioni potrebbero non essere precise al 100%.