Cita APA

Osborne, D. G., & Osborne, D. G. (1988). Coal preparation technology. London, Sydney: Graham.

Citación estilo Chicago

Osborne, D. G., y D. G. Osborne. Coal Preparation Technology. London, Sydney: Graham, 1988.

Cita MLA

Osborne, D. G., y D. G. Osborne. Coal Preparation Technology. London, Sydney: Graham, 1988.