Wulandari, R. (2016). Information Needs and Source Information of Agricultural Extension Workers in DIY. Universitas Muhammadiyah Yogyakarta.
Cita Chicago Style (17a ed.)Wulandari, Retno. Information Needs and Source Information of Agricultural Extension Workers in DIY. Universitas Muhammadiyah Yogyakarta, 2016.
Cita MLA (8a ed.)Wulandari, Retno. Information Needs and Source Information of Agricultural Extension Workers in DIY. Universitas Muhammadiyah Yogyakarta, 2016.
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