Lua APA (7ú heag.)

BARTHWAL R R. (1984). INDUSTRIAL ECONOMICS AN INTRODUCTORY TEXT BOOK. WILEY EASTERN.

Lua i Stíl Chicago (17ú heag.)

BARTHWAL R R. INDUSTRIAL ECONOMICS AN INTRODUCTORY TEXT BOOK. NEW DELHI: WILEY EASTERN, 1984.

Lua MLA (9ú heag.)

BARTHWAL R R. INDUSTRIAL ECONOMICS AN INTRODUCTORY TEXT BOOK. WILEY EASTERN, 1984.

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