APA引文

(1981). Coca survey 1980. Dept.of Economics & Statistics.

Chicago Edition Citation

Coca Survey 1980. Thiruvananthapuram: Dept.of Economics & Statistics, 1981.

MLA引文

Coca Survey 1980. Dept.of Economics & Statistics, 1981.

警告：这些引文格式不一定是100％准确.