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Paudel และผู้แต่งคนอื่นๆ. 2004. The effect of organic manures and chemical fertilizers on production of lettuce (Lactuca sativa L.). Field of Study Horticulture, Kasetsart University;
Paudel และผู้แต่งคนอื่นๆ. (2004) The effect of organic manures and chemical fertilizers on production of lettuce (Lactuca sativa L.) . Kasetsart University/Bangkok.
Paudel และผู้แต่งคนอื่นๆ. The effect of organic manures and chemical fertilizers on production of lettuce (Lactuca sativa L.). . Bangkok:Kasetsart University, 2004.
Paudel และผู้แต่งคนอื่นๆ. (2004) The effect of organic manures and chemical fertilizers on production of lettuce (Lactuca sativa L.) . Kasetsart University/Bangkok.