Lua APA (7ú heag.)

Humphrey, E. (1975). Encyclopedia International: V.6.: Diatom - Explosion. Grolier Inc.

Lua i Stíl Chicago (17ú heag.)

Humphrey, Edward. Encyclopedia International: V.6.: Diatom - Explosion. Grolier Inc, 1975.

Lua MLA (8ú heag.)

Humphrey, Edward. Encyclopedia International: V.6.: Diatom - Explosion. Grolier Inc, 1975.

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