APA (7th ed.) Citation

Educational Video Network, Inc, Interactive Educational Media (Firm), Schofield, G., Telford, C. P., Norton, B., & Stretch, P. (2005). Understanding painting: Tonal values. Interactive Educational Media.

Chicago Style (17th ed.) Citation

Educational Video Network, Inc, Interactive Educational Media (Firm), Gary Schofield, Charles Paul Telford, Bryan Norton, and Peter Stretch. Understanding Painting: Tonal Values. Huntsville, Tex.: Interactive Educational Media, 2005.

MLA (9th ed.) Citation

Educational Video Network, Inc, et al. Understanding Painting: Tonal Values. Interactive Educational Media, 2005.