Cita APA (7a ed.)

Sandoval, S. P., Pool, D. L., & Schultze, L. E. (1990). Effect of nonionic surfactants on chalcopyrite leaching under dump chemical conditions. United States. Dept. of the interior, Bureau of Mines.

Cita Chicago Style (17a ed.)

Sandoval, S. P., D. L. Pool, y L. E. Schultze. Effect of Nonionic Surfactants on Chalcopyrite Leaching Under Dump Chemical Conditions. [Washington]: United States. Dept. of the interior, Bureau of Mines, 1990.

Cita MLA (9a ed.)

Sandoval, S. P., et al. Effect of Nonionic Surfactants on Chalcopyrite Leaching Under Dump Chemical Conditions. United States. Dept. of the interior, Bureau of Mines, 1990.