APA (7th ed.) Citation

Gregory, N., Horton, J., Lang, R., & Sanders, M. (2020). Oil painting step-by-step. Search Press Limited.

Chicago Style (17th ed.) Citation

Gregory, Noel, James Horton, Roy Lang, and Michael Sanders. Oil Painting Step-by-step. Tunbridge Wells, Kent, [England]: Search Press Limited, 2020.

MLA (9th ed.) Citation

Gregory, Noel, et al. Oil Painting Step-by-step. Search Press Limited, 2020.