Chowdhury, P. N. (1973). Economics of research & development. People's Pub. House.
Chicagoスタイル(17版)引用形式Chowdhury, P. N. Economics of Research & Development. New Delhi: People's Pub. House, 1973.
MLA(8版)引用形式Chowdhury, P. N. Economics of Research & Development. People's Pub. House, 1973.
警告: この引用は必ずしも正確ではありません.