Gaya APA

Goodfellow, R, J. (2011). CONCRETE FOR UNDERGROUND STRUCTURES: Guidelines For Design and Construction . America: Society for Mining, Metallurgy and Exploration.

Gaya MLA

Goodfellow, Robert, J.F.. "CONCRETE FOR UNDERGROUND STRUCTURES: Guidelines For Design and Construction". America: Society for Mining, Metallurgy and Exploration, 2011. Text.