APA ציטוט

Ofosu-Amaah, S., Kratzer, J. H., & Nicholas, D. D. (1977). Is poliomyelitis a serious problem in developing countries?--lameness in Ghanaian schools.

Citação norma Chicago

Ofosu-Amaah, S., J H. Kratzer, and D D. Nicholas. Is Poliomyelitis a Serious Problem in Developing Countries?--lameness in Ghanaian Schools. 1977.

ציטוט MLA

Ofosu-Amaah, S., J H. Kratzer, and D D. Nicholas. Is Poliomyelitis a Serious Problem in Developing Countries?--lameness in Ghanaian Schools. 1977.