APA (7e ed.) Bronvermelding

Nilsen, D. N., Siemens, R. E., & Rhoads, S. C. (1979). Solvent extraction of cobalt from laterite-ammoniacal leach liquors. U.S. Dept. of the Interior, Bureau of Mines.

Chicago (17e ed.) Bronvermelding

Nilsen, D. N., R. E. Siemens, en S. C. Rhoads. Solvent Extraction of Cobalt from Laterite-ammoniacal Leach Liquors. Washington: U.S. Dept. of the Interior, Bureau of Mines, 1979.

MLA (9e ed.) Bronvermelding

Nilsen, D. N., et al. Solvent Extraction of Cobalt from Laterite-ammoniacal Leach Liquors. U.S. Dept. of the Interior, Bureau of Mines, 1979.