Lua APA (7ú heag.)
Drbal, L. F., Patricia G Boston, & Kayla L. Westra. (1996). Power Plant Engineering. CBS Publishers & Distributors.
Lua i Stíl Chicago (17ú heag.)
Drbal, Lawrence F., Patricia G Boston, agus Kayla L. Westra. Power Plant Engineering. New Delhi: CBS Publishers & Distributors, 1996.
Lua MLA (9ú heag.)
Drbal, Lawrence F., et al. Power Plant Engineering. CBS Publishers & Distributors, 1996.
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