Farm primer. Philippine Council for Agriculture, Forestry and Natural Resources Research and Development.
Cita Chicago (17th ed.)Farm Primer. Bicutan: Philippine Council for Agriculture, Forestry and Natural Resources Research and Development.
Cita MLA (9th ed.)Farm Primer. Philippine Council for Agriculture, Forestry and Natural Resources Research and Development.
Atenció: Aquestes cites poden no estar 100% correctes.