@book{88200,
	author = {San Jose, Nina Elaine C.  and  Mary Margarette R. Montalla, Louise Sheanne S. Opeña, Darren Paul S. Pascual, Arthur Vince Ivan P. Racoma, Jose Emilio V. Ricafrante and Leandro M. Zamora},
	title = {Determining the pH level of water in different water stations in Barangay Concepcion Uno, Marikina City in correspondence to the environment protection agency standards with the use of litmus paper.},
	year = {March 2019},
	address = {Marikina City},
	note = {Includes: references and appendices}
}