Gaya APA

Langi, F, F, G., Najoan, J, A. (2009). Barries to Delivery Care by Skiled Attendants in North Sulawesi . Surakarta: FK Universitas Sebelas Maret.

Gaya MLA

Langi, F.L., Fredrik, G.., Najoan, Johannis, A.. "Barries to Delivery Care by Skiled Attendants in North Sulawesi". Surakarta: FK Universitas Sebelas Maret, 2009. Text.