APA Style

Preker, A, S., Langenbrunner, J, C. (2005). Spending Wisely: Buying Health Services for the Poor . Washington: The Word Bank.

MLA Style

Preker, Alexander, S.., Langenbrunner, John, C.. "Spending Wisely: Buying Health Services for the Poor". Washington: The Word Bank, 2005. Kedokteran.