ARMSTRONG CHRISTOPHER. (2018). MAKER'S FIELD GUIDE (4TH ED.). MFG LAB.
Cita Chicago (17th ed.)ARMSTRONG CHRISTOPHER. MAKER'S FIELD GUIDE. 4TH ED. MFG LAB, 2018.
Cita MLA (9th ed.)ARMSTRONG CHRISTOPHER. MAKER'S FIELD GUIDE. 4TH ED. MFG LAB, 2018.
Atenció: Aquestes cites poden no estar 100% correctes.