Gaya APA

Langefors, U, :, K, B. (1978). The Modern Technique of Rock Blasting Third Edition (3rd). United States of America: John Wiley & Sons Ltd..

Gaya MLA

Langefors, U, :, Kihlstrom,, B. "The Modern Technique of Rock Blasting Third Edition". 3rd United States of America: John Wiley & Sons Ltd., 1978. Text.