APA(7版)引用形式
Tweed, W. C. (2010). Uncertain path: A search for the future of national parks. University of California Press.
Chicagoスタイル(17版)引用形式
Tweed, William C. Uncertain Path: A Search for the Future of National Parks. Berkeley: University of California Press, 2010.
MLA(9版)引用形式
Tweed, William C. Uncertain Path: A Search for the Future of National Parks. University of California Press, 2010.
警告: この引用は必ずしも正確ではありません.