Gair, A. (1997). Drawing: A complete step-by-step guide to techniques and materials. New Holland.
Citazione stile Chigago Style (17a edizione)Gair, Angela. Drawing: A Complete Step-by-step Guide to Techniques and Materials. London: New Holland, 1997.
Citatione MLA (9a ed.)Gair, Angela. Drawing: A Complete Step-by-step Guide to Techniques and Materials. New Holland, 1997.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.