Lua APA (7ú heag.)

BERNARD, O. (1975). ELECT. MEASUREMENT AND INSTRU. -.

Lua i Stíl Chicago (17ú heag.)

BERNARD, O. ELECT. MEASUREMENT AND INSTRU. -: -, 1975.

Lua MLA (9ú heag.)

BERNARD, O. ELECT. MEASUREMENT AND INSTRU. -, 1975.

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