Derleth A. (1954). Land of gray gold: (Lead mining in wisconsin). Alladin books.
Чикаго маягийн жагсаалтDerleth A. Land of Gray Gold: (Lead Mining in Wisconsin). New York: Alladin books, 1954.
MLA ишлэлDerleth A. Land of Gray Gold: (Lead Mining in Wisconsin). Alladin books, 1954.
Warning: These citations may not always be 100% accurate.