Cita APA (7a ed.)

Gilbert, E. T. (2019). Drawing tools & materials: A practical guide to graphite, charcoal, colored pencil and more. Walter Foster.

Cita Chicago Style (17a ed.)

Gilbert, Elizabeth T. Drawing Tools & Materials: A Practical Guide to Graphite, Charcoal, Colored Pencil and More. Mission Viejo, CA: Walter Foster, 2019.

Cita MLA (9a ed.)

Gilbert, Elizabeth T. Drawing Tools & Materials: A Practical Guide to Graphite, Charcoal, Colored Pencil and More. Walter Foster, 2019.