APA (7th ed.) Citation

Penell, J. (1913). The wonder of work on the Panama Canal.

Chicago Style (17th ed.) Citation

Penell, Joseph. The Wonder of Work on the Panama Canal. 1913.

MLA (9th ed.) Citation

Penell, Joseph. The Wonder of Work on the Panama Canal. 1913.

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