@book{6191,
	author = {Sigala Mercado, Timoteo. and Ramírez Barrientos, César Eduardo.},
	title = {Determinación de azúcares simples y acidez en colectas de tomate de cáscara (Physalis ixocarpa Brot.)},
	publisher = {El autor,},
	year = {1992},
	address = {Chapingo, Méx. :}
}