APA引文

W P Crawford. (1991). Proceedings 39th annual pfizer research conference may 13, 1991. Newyork.

Chicago Edition Citation

W P Crawford. Proceedings 39th Annual Pfizer Research Conference May 13, 1991. Newyork, 1991.

MLA引文

W P Crawford. Proceedings 39th Annual Pfizer Research Conference May 13, 1991. Newyork, 1991.

警告：這些引文格式不一定是100％准確.