Cita APA (7a ed.)

Hewitson, J., & Zilla, P. P. (2017). Children’s heart disease in sub-Saharan Africa: Challenging the burden of disease. South African Heart Association.

Cita Chicago Style (17a ed.)

Hewitson, John, y Peter P.T Zilla. Children’s Heart Disease in Sub-Saharan Africa: Challenging the Burden of Disease. South African Heart Association, 2017.

Cita MLA (8a ed.)

Hewitson, John, y Peter P.T Zilla. Children’s Heart Disease in Sub-Saharan Africa: Challenging the Burden of Disease. South African Heart Association, 2017.