Não informado. (1979). Working paper series. International Potato Center, Social Science Department.
Chicagoスタイル(17版)引用形式Não informado. Working Paper Series. Lima: International Potato Center, Social Science Department, 1979.
MLA(8版)引用形式Não informado. Working Paper Series. International Potato Center, Social Science Department, 1979.
警告: この引用は必ずしも正確ではありません.