APA引文

William P. Cunningham, B. W. S. Environmental science a global concern. WmC. Brown.

Chicago Style (17th ed.) Citation

William P. Cunningham, Barbara Woodworth Saigo. Environmental Science a Global Concern. WmC. Brown.

MLA引文

William P. Cunningham, Barbara Woodworth Saigo. Environmental Science a Global Concern. WmC. Brown.

警告：這些引文格式不一定是100％准確.