Gaya APA

Rensburg, P, W, J. (1970). Planning Open Pit Mines: Proceedings of the Symposium on the Theoretical...... Stability . Amsterdam: A. A. Balkema.

Gaya MLA

Rensburg, P., W., J.. "Planning Open Pit Mines: Proceedings of the Symposium on the Theoretical...... Stability". Amsterdam: A. A. Balkema, 1970. Text.