APA (7e ed.) Bronvermelding

Não informado. (1972). Annals of the Research Institute of Epidemiology and Microbiology. Ministery of Public Health.

Chicago (17e ed.) Bronvermelding

Não informado. Annals of the Research Institute of Epidemiology and Microbiology. Sofia: Ministery of Public Health, 1972.

MLA (8e ed.) Bronvermelding

Não informado. Annals of the Research Institute of Epidemiology and Microbiology. Ministery of Public Health, 1972.

Let op: Deze citaties zijn niet altijd 100% accuraat.