APA (7th ed.) Citation

Esat R., M., Morrison, A., & Norton, J. (1990). Get sharp. Heinmann.

Chicago Style (17th ed.) Citation

Esat R., Morison, A. Morrison, and J. Norton. Get Sharp. Nairobi: Heinmann, 1990.

MLA (9th ed.) Citation

Esat R., Morison, et al. Get Sharp. Heinmann, 1990.