APA引文

Ng, V. S. T., Teo, Q., & Xia, Y. (2008). Environmental friendly products.

Chicago Style Citation

Ng, Valerie Siok Teng., Qiuyan Teo, and Yang Xia. Environmental Friendly Products. 2008.

MLA引文

Ng, Valerie Siok Teng., Qiuyan Teo, and Yang Xia. Environmental Friendly Products. 2008.

警告：這些引文格式不一定是100％准確.