Gaya APA

Sumbali,Geeta, ., R.S.Mehrotra, . (2009). Princple of microbiology . New Delhi: McGro-Hill Offices.

Gaya MLA

Sumbali,Geeta, ., R.S.Mehrotra, . "Princple of microbiology". New Delhi: McGro-Hill Offices, 2009. Textbook.