APA (7th ed.) Citation

WIFFEN, V. (1998). Sketching: Planning and drawing. Sterling Publishing.

Chicago Style (17th ed.) Citation

WIFFEN, Valerie. Sketching: Planning and Drawing. Sterling Publishing, 1998.

MLA (8th ed.) Citation

WIFFEN, Valerie. Sketching: Planning and Drawing. Sterling Publishing, 1998.

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