APA (7th ed.) Citation

Kogan Page, Nchols Publishing, & Hartley, J. (1994). Designing instructional text (3rd ed.). Kogan Page Nchols Publishing.

Chicago Style (17th ed.) Citation

Kogan Page, Nchols Publishing, and James Hartley. Designing Instructional Text. 3rd ed. London : New Jersey: Kogan Page Nchols Publishing, 1994.

MLA (8th ed.) Citation

Kogan Page, et al. Designing Instructional Text. 3rd ed. Kogan Page Nchols Publishing, 1994.