Santoso, P. B., & Darwanto, D. (2015). Strategy for Strengthening Farmer Groups by Institutional Strengthening. Muhammadiyah University Press.
Παραπομπή σε μορφή Chicago (17η εκδ.)Santoso, Purbayu Budi, και Darwanto Darwanto. Strategy for Strengthening Farmer Groups by Institutional Strengthening. Muhammadiyah University Press, 2015.
Παραπομπή σε μορφή MLA (9th εκδ.)Santoso, Purbayu Budi, και Darwanto Darwanto. Strategy for Strengthening Farmer Groups by Institutional Strengthening. Muhammadiyah University Press, 2015.
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