Não informado. (2001). South African journal of plant and soil. Foundation for Education, Science and Technology.
Chicagoスタイル(17版)引用形式Não informado. South African Journal of Plant and Soil. Pretoria, Africa do Sul: Foundation for Education, Science and Technology, 2001.
MLA(8版)引用形式Não informado. South African Journal of Plant and Soil. Foundation for Education, Science and Technology, 2001.
警告: この引用は必ずしも正確ではありません.