APA引文

(1949). Petroleum act of 1949 (R.A.387). s.n.

Chicago Style (17th ed.) Citation

Petroleum Act of 1949 (R.A.387). s.l: s.n, 1949.

MLA引文

Petroleum Act of 1949 (R.A.387). s.n, 1949.

警告：這些引文格式不一定是100％准確.