Nicholls, B. (1938). Painting in oils. Studio publications.
Cita Chicago (17th ed.)Nicholls, Bertram. Painting in Oils. London ; New York: Studio publications, 1938.
Cita MLA (8th ed.)Nicholls, Bertram. Painting in Oils. Studio publications, 1938.
Atenció: Aquestes cites poden no estar 100% correctes.