@book{49166,
	author = {Aleksander Mratinkovic, Dan Piestun, Hazem Shawky Fouda, Felecia Killings, Dr. Sandra El Hajj, Fozia Parveen, Igor Krunic, Dr. Jovan Pehcevski, Dr. Tanjina Nur, Stephen obtained, Michelle Holds Masters},
	title = {Theory practice & techniques in the trigonometry},
	publisher = {3GE - Learning},
	year = {2018},
	address = {USA},
	edition = {c.1}
}