APA
Lipsey and Chrystal, . (2007). Economics. OUP, New Delhi: .
Chicago
Lipsey and Chrystal, . 2007. Economics. OUP, New Delhi: .
Harvard
Lipsey and Chrystal, . (2007). Economics. OUP, New Delhi: .
MLA
Lipsey and Chrystal, . Economics. OUP, New Delhi: . 2007.