APA

Fletcher E. L., .Practical instructions in quantitative assaying with the blowpipe. Containing also readily applied qaulitative blowpipe tests. For the prospector, miner, and assayer, and for use in colleges / by E. L. Fletcher, U. S. Army. London : Chapman & Hall, limited, 1907: .

Chicago

Fletcher E L, .Practical instructions in quantitative assaying with the blowpipe. Containing also readily applied qaulitative blowpipe tests. For the prospector, miner, and assayer, and for use in colleges / by E. L. Fletcher, U. S. Army. London : Chapman & Hall, limited, 1907: .

Harvard

Fletcher E. L., .Practical instructions in quantitative assaying with the blowpipe. Containing also readily applied qaulitative blowpipe tests. For the prospector, miner, and assayer, and for use in colleges / by E. L. Fletcher, U. S. Army. London : Chapman & Hall, limited, 1907: .

MLA

Fletcher E L, .London : Chapman & Hall, limited, 1907: . .