Citace podle APA (7th ed.)

Levrai P. Peter. (2006). English for the Energy Industries. Oil, Gas and Petrochemicals. London, Languages solutions, 2006.

Citace podle Chicago (17th ed.)

Levrai P. Peter. English for the Energy Industries. Oil, Gas and Petrochemicals. London, Languages solutions, 2006, 2006.

Citace podle MLA (9th ed.)

Levrai P. Peter. English for the Energy Industries. Oil, Gas and Petrochemicals. London, Languages solutions, 2006, 2006.

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