APA (7th ed.) Citation

Duckworth, C. L. (1958). Circular equivalents of rectangular ducts. Power Industry, 74, 29.

Chicago Style (17th ed.) Citation

Duckworth, C. L. "Circular Equivalents of Rectangular Ducts." Power Industry 74 (1958): 29.

MLA (9th ed.) Citation

Duckworth, C. L. "Circular Equivalents of Rectangular Ducts." Power Industry, vol. 74, 1958, p. 29.

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