Lua APA (7ú heag.)

Purves, D. (1985). Trace-element contamination of the environment (Rev. ed.). Elseviers.

Lua i Stíl Chicago (17ú heag.)

Purves, David. Trace-element Contamination of the Environment. Rev. ed. Amsterdam: Elseviers, 1985.

Lua MLA (9ú heag.)

Purves, David. Trace-element Contamination of the Environment. Rev. ed. Elseviers, 1985.

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