APA引文

Foster, R. W. (1989). The liability environment. American Congress on Surveying and Mapping.

Chicago Style (17th ed.) Citation

Foster, Robert W. The Liability Environment. Bethesda, Md.: American Congress on Surveying and Mapping, 1989.

MLA引文

Foster, Robert W. The Liability Environment. American Congress on Surveying and Mapping, 1989.