APA (7th ed.) Citation

Jones, A., Burgen, A., & Hosker, I. (1980). Focal English. Thornes.

Chicago Style (17th ed.) Citation

Jones, Alwyn, Andrew Burgen, and Ian Hosker. Focal English. Cheltenham: Thornes, 1980.

MLA (9th ed.) Citation

Jones, Alwyn, et al. Focal English. Thornes, 1980.