APA-viite (7. p.)

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-viite (17. p.)

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

MLA-viite (9. p.)

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