APA استشهاد

Roday, S. (1999). Hygine and sanitation in industry. McGraw-Hill.

استشهاد بنمط شيكاغو

Roday, S. Hygine and Sanitation in Industry. New Delhi: McGraw-Hill, 1999.

MLA استشهاد

Roday, S. Hygine and Sanitation in Industry. McGraw-Hill, 1999.