APA引文

Porter, P. W. (1956). Population distribution and land use in Liberia. University of London.

Chicago Style (17th ed.) Citation

Porter, Philip Wayland. Population Distribution and Land Use in Liberia. University of London, 1956.

MLA引文

Porter, Philip Wayland. Population Distribution and Land Use in Liberia. University of London, 1956.

警告：這些引文格式不一定是100％准確.