Não informado. (1989). Discovery and innovations. Academy Science Publishers.
Chicagoスタイル(17版)引用形式Não informado. Discovery and Innovations. Nairobi: Academy Science Publishers, 1989.
MLA(8版)引用形式Não informado. Discovery and Innovations. Academy Science Publishers, 1989.
警告: この引用は必ずしも正確ではありません.