APA (7th ed.) Citation

Duncan, C., Duncan, S., & Scott, S. (1998). The effects of population density and malnutrition on the dynamics of whooping cough.

Chicago Style (17th ed.) Citation

Duncan, C., S. Duncan, and S. Scott. The Effects of Population Density and Malnutrition on the Dynamics of Whooping Cough. 1998.

MLA (9th ed.) Citation

Duncan, C., et al. The Effects of Population Density and Malnutrition on the Dynamics of Whooping Cough. 1998.