Cita APA

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 Citation

Fuglie,Keith O, Salazar,Leuis, i Zhang,Liming. Economic Impact of Virus Free Sweet Potato Planting Material in Shandong Province ,China. Peru: Internationaal potato centre, 1999.

Cita MLA

Fuglie,Keith O, et al. Economic Impact of Virus Free Sweet Potato Planting Material in Shandong Province ,China. Internationaal potato centre, 1999.