APA (7th ed.) Citation

Helfer, R., Loney, G. M., & Brook, P. (1998). Peter Brook: Oxford to Orghast. Harwood Academic Publishers.

Chicago Style (17th ed.) Citation

Helfer, Richard, Glenn Meredith Loney, and Peter Brook. Peter Brook: Oxford to Orghast. Amsterdam, Netherlands: Harwood Academic Publishers, 1998.

MLA (9th ed.) Citation

Helfer, Richard, et al. Peter Brook: Oxford to Orghast. Harwood Academic Publishers, 1998.