APA (7th ed.) Citation

Tapper, W. (1948). Portable well logging unit. World Oil, 127, 80.

Chicago Style (17th ed.) Citation

Tapper, W. "Portable Well Logging Unit." World Oil 127 (1948): 80.

MLA (9th ed.) Citation

Tapper, W. "Portable Well Logging Unit." World Oil, vol. 127, 1948, p. 80.

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