Não informado. (1903). South African Journal of Science. Associated Scientific & Technical Societies of South Africa.
Chicagoスタイル(17版)引用形式Não informado. South African Journal of Science. Johannesburg, Africa do Sul: Associated Scientific & Technical Societies of South Africa, 1903.
MLA(8版)引用形式Não informado. South African Journal of Science. Associated Scientific & Technical Societies of South Africa, 1903.
警告: この引用は必ずしも正確ではありません.