APA (7th ed.) Citation

Beasley, D. (1979). Design illustration: Sketching and shading techniques. Heinemann Educational Books.

Chicago Style (17th ed.) Citation

Beasley, David. Design Illustration: Sketching and Shading Techniques. London: Heinemann Educational Books, 1979.

MLA (9th ed.) Citation

Beasley, David. Design Illustration: Sketching and Shading Techniques. Heinemann Educational Books, 1979.

Warning: These citations may not always be 100% accurate.