Suwapan Ratanarat และ Kris Ratanapratoom; Supaporn Ratanarat. (2005) Plant Nutrient Management for Increasing Peanut Production Efficiency. <i>Thai Agricultural Research Journal</i>, <i>23</i>(3), 300-312.Suwapan Ratanarat และ Kris Ratanapratoom; Supaporn Ratanarat. "Plant Nutrient Management for Increasing Peanut Production Efficiency". Thai Agricultural Research Journal 23 (2005):300-312.Suwapan Ratanarat และ Kris Ratanapratoom; Supaporn Ratanarat. Plant Nutrient Management for Increasing Peanut Production Efficiency. Department of Agriculture:ม.ป.ท. 2005.