Fuglie,Keith O, Salazar,Leuis, & Zhang,Liming. (1999). Economic impact of virus free sweet potato planting material in shandong province ,China. Internationaal potato centre.
Chicago Edition CitationFuglie,Keith O, Salazar,Leuis, and Zhang,Liming. Economic Impact of Virus Free Sweet Potato Planting Material in Shandong Province ,China. Peru: Internationaal potato centre, 1999.
MLA Edition CitationFuglie,Keith O, et al. Economic Impact of Virus Free Sweet Potato Planting Material in Shandong Province ,China. Internationaal potato centre, 1999.
Warning: These citations may not always be 100% accurate.