Philips. (1969). Special quality tubes. Miscellaneous devices. Philips.
Cita Chicago Style (17a ed.)Philips. Special Quality Tubes. Miscellaneous Devices. Philips, 1969.
Cita MLA (8a ed.)Philips. Special Quality Tubes. Miscellaneous Devices. Philips, 1969.
Precaución: Estas citas no son 100% exactas.