Gaya APA
Esterhuizen, Gabriek S., Dennis R. Dolinar, John L. Ellenberger. (2011).
Pillar and roof span design guidelines for underground stone mines .
Washington:
Department of Health and Human Services.
Gaya Chicago
Esterhuizen, Gabriek S., Dennis R. Dolinar, John L. Ellenberger.
Pillar and roof span design guidelines for underground stone mines.
Washington:
Department of Health and Human Services,
2011.
Text.
Gaya MLA
Esterhuizen, Gabriek S., Dennis R. Dolinar, John L. Ellenberger.
Pillar and roof span design guidelines for underground stone mines.
Washington:
Department of Health and Human Services,
2011.
Text.
Gaya Turabian
Esterhuizen, Gabriek S., Dennis R. Dolinar, John L. Ellenberger.
Pillar and roof span design guidelines for underground stone mines.
Washington:
Department of Health and Human Services,
2011.
Print.