@book{88210,
	author = {Nina Grace S.J. Flores, and  Delfin M. Polliente},
	title = {Assessment of sustainability of tourism course in Our Lady of Perpetual Succor College /},
	publisher = {OLOPSC, },
	year = {March 201},
	address = {Marikina City:},
	note = {Includes: references}
}