Grassi Neto, R. (2013). Agricultural contracts: From ancient times to modern laws.
Chicago Style aipamenaGrassi Neto, Roberto. Agricultural Contracts: From Ancient Times to Modern Laws. 2013.
MLA aipamenaGrassi Neto, Roberto. Agricultural Contracts: From Ancient Times to Modern Laws. 2013.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.