APA (7th ed.) Citation

Perryman, R. (1972). Power losses in small samples of silicon iron. Journal of Physics. E, Scientific Instruments., 5, 991.

Chicago Style (17th ed.) Citation

Perryman, R. "Power Losses in Small Samples of Silicon Iron." Journal of Physics. E, Scientific Instruments. 5 (1972): 991.

MLA (9th ed.) Citation

Perryman, R. "Power Losses in Small Samples of Silicon Iron." Journal of Physics. E, Scientific Instruments., vol. 5, 1972, p. 991.