Petikan APA

Olken, B. A. (2004). Essays in the political economy of development.

Petikan Gaya Chicago

Olken, Benjamin Aaron. Essays in the Political Economy of Development. 2004.

Petikan MLA

Olken, Benjamin Aaron. Essays in the Political Economy of Development. 2004.

Amaran: Petikan-petikan ini tidak semestinya 100% tepat.