APA (7th ed.) Citation

Portal, M. G. (1987). Creep measuring device for low melting point metals. [publisher not identified].

Chicago Style (17th ed.) Citation

Portal, Marc-Emmanuel Gilbert. Creep Measuring Device for Low Melting Point Metals. [Place of publication not identified]: [publisher not identified], 1987.

MLA (9th ed.) Citation

Portal, Marc-Emmanuel Gilbert. Creep Measuring Device for Low Melting Point Metals. [publisher not identified], 1987.