Buppa Kongsamai และผู้แต่งคนอื่นๆ. (2010) Seed Alpha-tocopherol and oil Content in Sunflower (Helianthus annuus L.) Inbreds, Open-pollinated Varieties and Commercial Hybrids. <i>Thai Agricultural Research Journal</i>, <i>28</i>(3), 317-325.Buppa Kongsamai และผู้แต่งคนอื่นๆ. "Seed Alpha-tocopherol and oil Content in Sunflower (Helianthus annuus L.) Inbreds, Open-pollinated Varieties and Commercial Hybrids". Thai Agricultural Research Journal 28 (2010):317-325.Buppa Kongsamai และผู้แต่งคนอื่นๆ. Seed Alpha-tocopherol and oil Content in Sunflower (Helianthus annuus L.) Inbreds, Open-pollinated Varieties and Commercial Hybrids. Department of Agriculture:ม.ป.ท. 2010.