APA引文

Cabral, A. A. (1977). An economic evaluation of the copper industry in the Philippines. Animo Repository.

Chicago Style Citation

Cabral, Antonio Ampil. An Economic Evaluation of the Copper Industry in the Philippines. Animo Repository, 1977.

MLA引文

Cabral, Antonio Ampil. An Economic Evaluation of the Copper Industry in the Philippines. Animo Repository, 1977.

警告：這些引文格式不一定是100％准確.