APA-čujuhus (7. p.)

U.S. Environmental Protection Agency. The environmental professional<U+0092>s guide to lean & six sigma.

Chicago-čujuhus (17. p.)

U.S. Environmental Protection Agency. The Environmental Professional<U+0092>s Guide to Lean & Six Sigma.

MLA-čujuhus (9. p.)

U.S. Environmental Protection Agency. The Environmental Professional<U+0092>s Guide to Lean & Six Sigma.

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