ARMSTRONG CHRISTOPHER. (2018). MAKER'S FIELD GUIDE (4TH ED.). MFG LAB.
Chicago Style aipamenaARMSTRONG CHRISTOPHER. MAKER'S FIELD GUIDE. 4TH ED. MFG LAB, 2018.
MLA aipamenaARMSTRONG CHRISTOPHER. MAKER'S FIELD GUIDE. 4TH ED. MFG LAB, 2018.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.