Gaya APA

Gray, K, E. (1972). Basic and Applied Rock Mechanics: Tenth Symposium on Rock Mechanics . United States of America: The American Institute of Mining and Metallurgical Engineers.

Gaya MLA

Gray, Kenneth, E.. "Basic and Applied Rock Mechanics: Tenth Symposium on Rock Mechanics". United States of America: The American Institute of Mining and Metallurgical Engineers, 1972. Text.