Sidaway, I. (2011). Pastels in 10 steps: Learn all the techniques you need in just one painting. Bounty Books.
Citazione stile Chigago Style (17a edizione)Sidaway, Ian. Pastels in 10 Steps: Learn All the Techniques You Need in Just One Painting. London: Bounty Books, 2011.
Citatione MLA (9a ed.)Sidaway, Ian. Pastels in 10 Steps: Learn All the Techniques You Need in Just One Painting. Bounty Books, 2011.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.