Cita APA (7th ed.)
Barnfield, G., & Male, T. (1963). Technical drawing. The English Uniersities press.
Cita Chicago (17th ed.)
Barnfield, G.R, i T. Male. Technical Drawing. London: The English Uniersities press, 1963.
Cita MLA (9th ed.)
Barnfield, G.R, i T. Male. Technical Drawing. The English Uniersities press, 1963.
Atenció: Aquestes cites poden no estar 100% correctes.