APA

Pollock T. M., Bell J. A., Bradford Hill A., Cockburn W. C., Cvjetanovic B., Evans D. G., Kostrzewski J., Schofield F. D. & World Health Organization. (1966). Trials of prophylactic agents for the control of communicable diseases : a guide to their organization and evaluation. Geneva: World Health Organization.

Chicago

Pollock Thomas Millar, Bell J A, Bradford Hill Austin, Cockburn W Chas, Cvjetanovic Branko, Evans D G, Kostrzewski Jan, Schofield F D and World Health Organization. 1966. Trials of prophylactic agents for the control of communicable diseases : a guide to their organization and evaluation. Geneva: World Health Organization.

Harvard

Pollock T. M., Bell J. A., Bradford Hill A., Cockburn W. C., Cvjetanovic B., Evans D. G., Kostrzewski J., Schofield F. D. and World Health Organization. (1966). Trials of prophylactic agents for the control of communicable diseases : a guide to their organization and evaluation. Geneva: World Health Organization.

MLA

Pollock Thomas Millar, Bell J A, Bradford Hill Austin, Cockburn W Chas, Cvjetanovic Branko, Evans D G, Kostrzewski Jan, Schofield F D and World Health Organization. Trials of prophylactic agents for the control of communicable diseases : a guide to their organization and evaluation. Geneva: World Health Organization. 1966.