Não informado. (1946). Farm equipment retailing. National Retail Farm Equipment Association.
Chicago-viite (17. p.)Não informado. Farm Equipment Retailing. Washington: National Retail Farm Equipment Association, 1946.
MLA-viite (8. p.)Não informado. Farm Equipment Retailing. National Retail Farm Equipment Association, 1946.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.