http://gandha.weebly.com/uploads/1/3/3/6/13367253/viruses_ppt.pdf
https://www.boundless.com/microbiology/textbooks/boundless-microbiology-textbook/microbial-genetics-7/genetic-transfer-in-prokaryotes-81/bacterial-transduction-443-6859/
Prentice Hall Biology textbook
https://www.boundless.com/microbiology/textbooks/boundless-microbiology-textbook/microbial-genetics-7/genetic-transfer-in-prokaryotes-81/bacterial-transduction-443-6859/
Prentice Hall Biology textbook