Muir, J. (1981). Our national parks. University of Wisconsin Press.
Chicagoスタイル(17版)引用形式Muir, John. Our National Parks. Madison, Wis.: University of Wisconsin Press, 1981.
MLA(9版)引用形式Muir, John. Our National Parks. University of Wisconsin Press, 1981.
警告: この引用は必ずしも正確ではありません.