Revilla, A. (1983). The COSTEF system: A cost effective reforestration/agroreforestration strategy. Forestry Development Center, UPLB College of Forestry.
Chicago-viite (17. p.)Revilla, A.V. The COSTEF System: A Cost Effective Reforestration/agroreforestration Strategy. College, Laguna: Forestry Development Center, UPLB College of Forestry, 1983.
MLA-viite (9. p.)Revilla, A.V. The COSTEF System: A Cost Effective Reforestration/agroreforestration Strategy. Forestry Development Center, UPLB College of Forestry, 1983.
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