Cita APA (7th ed.)

Pickering R. G. B. & The South African Institute of Mining and Metallurgy. The optimization of mining method and equipment.

Cita Chicago (17th ed.)

Pickering R. G. B. i The South African Institute of Mining and Metallurgy. The Optimization of Mining Method and Equipment.

Cita MLA (9th ed.)

Pickering R. G. B. i The South African Institute of Mining and Metallurgy. The Optimization of Mining Method and Equipment.