APA

Hull D., Johnston D. I., .Essential Paediatrics. London: Churchil Livingstone.

Chicago

Hull David, Johnston Derek I, .Essential Paediatrics. London: Churchil Livingstone.

Harvard

Hull D., Johnston D. I., .Essential Paediatrics. London: Churchil Livingstone.

MLA

Hull David, Johnston Derek I, .London: Churchil Livingstone. .