CRUEGER WULF AND CRUEGER ANNELIESE. (2005). BIOTECHNOLOGY A TEXT BOOK OF INDUSTRIAL MICROBIOLOGY (2nd.). PANIMA PUBLISHING , NEW DELHI.
Lua i Stíl Chicago (17ú heag.)CRUEGER WULF AND CRUEGER ANNELIESE. BIOTECHNOLOGY A TEXT BOOK OF INDUSTRIAL MICROBIOLOGY. 2nd. PANIMA PUBLISHING , NEW DELHI, 2005.
Lua MLA (9ú heag.)CRUEGER WULF AND CRUEGER ANNELIESE. BIOTECHNOLOGY A TEXT BOOK OF INDUSTRIAL MICROBIOLOGY. 2nd. PANIMA PUBLISHING , NEW DELHI, 2005.
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