HUISMAN, H. (1987). Regional and rural development planning series Nr.IX: Metode penelitian. F.Geografi-UGM.
Cita Chicago (17th ed.)HUISMAN, Henk. Regional and Rural Development Planning Series Nr.IX: Metode Penelitian. Yogyakarta: F.Geografi-UGM, 1987.
Cita MLA (9th ed.)HUISMAN, Henk. Regional and Rural Development Planning Series Nr.IX: Metode Penelitian. F.Geografi-UGM, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.