Não informado. (2022). Minerals Quarrying & Recycling. QMJ Publishing.
Lua i Stíl Chicago (17ú heag.)Não informado. Minerals Quarrying & Recycling. Nottingham, Inglaterra: QMJ Publishing, 2022.
Lua MLA (8ú heag.)Não informado. Minerals Quarrying & Recycling. QMJ Publishing, 2022.
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