Cabrera, M. P. Maintenance in engineering laboratories. Philippine Engineering Journal.
Cita Chicago Style (17a ed.)Cabrera, Macario P. "Maintenance in Engineering Laboratories." Philippine Engineering Journal .
Cita MLA (9a ed.)Cabrera, Macario P. "Maintenance in Engineering Laboratories." Philippine Engineering Journal, .
Precaución: Estas citas no son 100% exactas.