Soewarno, S., & Yuningsih, S. (2004). Hydrological Characteristics of Kaligarang Watershed. Universitas Muhammadiyah Surakarta.
Citazione stile Chigago Style (17a edizione)Soewarno, Soewarno, e Srimulat Yuningsih. Hydrological Characteristics of Kaligarang Watershed. Universitas Muhammadiyah Surakarta, 2004.
Citatione MLA (9a ed.)Soewarno, Soewarno, e Srimulat Yuningsih. Hydrological Characteristics of Kaligarang Watershed. Universitas Muhammadiyah Surakarta, 2004.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.