Lua APA (7ú heag.)

Kohl, A. L., & Nielsen, R. (1997). Gas purification (5th ed.). Gulf Pub..

Lua i Stíl Chicago (17ú heag.)

Kohl, Arthur L., agus Richard Nielsen. Gas Purification. 5th ed. Houston, Tex.: Gulf Pub., 1997.

Lua MLA (9ú heag.)

Kohl, Arthur L., agus Richard Nielsen. Gas Purification. 5th ed. Gulf Pub., 1997.

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