Não informado. (1969). Rock Mechanics and Rock Engineering. Springer Verlag.
Chicagoスタイル(17版)引用形式Não informado. Rock Mechanics and Rock Engineering. Wien: Springer Verlag, 1969.
MLA(8版)引用形式Não informado. Rock Mechanics and Rock Engineering. Springer Verlag, 1969.
警告: この引用は必ずしも正確ではありません.