Lua APA (7ú heag.)

Não informado. (1974). CIS abstracts. International Safety and Health Information Centre.

Lua i Stíl Chicago (17ú heag.)

Não informado. CIS Abstracts. Geneva, Suíça: International Safety and Health Information Centre, 1974.

Lua MLA (8ú heag.)

Não informado. CIS Abstracts. International Safety and Health Information Centre, 1974.

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