Não informado. (1987). International Journal of Surface Mining, Reclamation and Environment. Balkema.
Chicagoスタイル(17版)引用形式Não informado. International Journal of Surface Mining, Reclamation and Environment. Rotterdam, Holanda: Balkema, 1987.
MLA(8版)引用形式Não informado. International Journal of Surface Mining, Reclamation and Environment. Balkema, 1987.
警告: この引用は必ずしも正確ではありません.