Gaya APA

G., R, K, R. (1980). Scientific contexts : english for technical student (--). New Delhi: McGraw-Hill.

Gaya MLA

G., R.C.Sharma,Chaturvedi,P.D,Ram,Tulsi,Mohan, Krishna,Shukla,SC,Maliakal,, Rosie. "Scientific contexts : english for technical student". -- New Delhi: McGraw-Hill, 1980. Text.