APA (7th ed.) Citation

Walker, R. C. (1948). Photoelectric cells in industry. Pitman.

Chicago Style (17th ed.) Citation

Walker, Ronald Claude. Photoelectric Cells in Industry. London: Pitman, 1948.

MLA (9th ed.) Citation

Walker, Ronald Claude. Photoelectric Cells in Industry. Pitman, 1948.

Warning: These citations may not always be 100% accurate.