APA (7th ed.) Citation

Lalloo, D., Theakston, R., & Warrell, D. (2002). The African challenge.

Chicago Style (17th ed.) Citation

Lalloo, D., R. Theakston, and D. Warrell. The African Challenge. 2002.

MLA (9th ed.) Citation

Lalloo, D., et al. The African Challenge. 2002.