Cruz, I. E. Conversion of oil-fired boilers to utilize solid fuel. U. P. Engineering research journal.
Čikaški stil citiranja (17. izdanje)Cruz, Ibarra E. "Conversion of Oil-fired Boilers to Utilize Solid Fuel." U. P. Engineering Research Journal .
MLA način citiranja (9. izdanje)Cruz, Ibarra E. "Conversion of Oil-fired Boilers to Utilize Solid Fuel." U. P. Engineering Research Journal, .
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