Lua APA (7ú heag.)

GOPALKRISHNAN. (1996). COST REDUCTION HD. BK. JAICO PUB.

Lua i Stíl Chicago (17ú heag.)

GOPALKRISHNAN. COST REDUCTION HD. BK. BOMBAY: JAICO PUB, 1996.

Lua MLA (9ú heag.)

GOPALKRISHNAN. COST REDUCTION HD. BK. JAICO PUB, 1996.

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