Cita APA (7th ed.)

Duncan, S., Scott, S., & Duncan, C. (1994). SMALLPOX EPIDEMICS IN CITIES IN BRITAIN.

Cita Chicago (17th ed.)

Duncan, S., S. Scott, i C. Duncan. SMALLPOX EPIDEMICS IN CITIES IN BRITAIN. 1994.

Cita MLA (9th ed.)

Duncan, S., et al. SMALLPOX EPIDEMICS IN CITIES IN BRITAIN. 1994.