Não informado. (1968). Electronic applications, components and materials. Philips Gloeilampenfabrieken.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Electronic Applications, Components and Materials. Eindhoven, Holanda: Philips Gloeilampenfabrieken, 1968.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Electronic Applications, Components and Materials. Philips Gloeilampenfabrieken, 1968.
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