@book{10063,
	author = {Singh, Gopal (ਸਿੰਘ, ਗੋਪਾਲ)},
	title = {Prithvi (ਪ੍ਰਿਥਵੀ)},
	publisher = {Director Education Department},
	year = {1996},
	address = {Punjab},
	edition = {2nd}
}