APA-Zitierstil (7. Ausg.)

Keller, E. (1916). The principles and practice of sampling metallic metallurgical materials: With special reference to the sampling of Copper Bullion. Gov. Print. Off.

Chicago-Zitierstil (17. Ausg.)

Keller, Edward. The Principles and Practice of Sampling Metallic Metallurgical Materials: With Special Reference to the Sampling of Copper Bullion. Washington: Gov. Print. Off, 1916.

MLA-Zitierstil (9. Ausg.)

Keller, Edward. The Principles and Practice of Sampling Metallic Metallurgical Materials: With Special Reference to the Sampling of Copper Bullion. Gov. Print. Off, 1916.