Leppard, G. G. (1983). Trace element speciation in surface waters and its ecological implications. Plenum.
استشهاد بنمط شيكاغوLeppard, Gray G. Trace Element Speciation in Surface Waters and Its Ecological Implications. New York: Plenum, 1983.
MLA استشهادLeppard, Gray G. Trace Element Speciation in Surface Waters and Its Ecological Implications. Plenum, 1983.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.