Cita APA (7a ed.)

Ellis, M. W., & McGregor, J. A. (1967). The kalengwa copper deposit in Northwestern Zambia.

Cita Chicago Style (17a ed.)

Ellis, Miller W., y J. A. McGregor. The Kalengwa Copper Deposit in Northwestern Zambia. 1967.

Cita MLA (8a ed.)

Ellis, Miller W., y J. A. McGregor. The Kalengwa Copper Deposit in Northwestern Zambia. 1967.