APA (7th ed.) Citation

Heyl, E. (1953). Early American steamers. Erik Heyl.

Chicago Style (17th ed.) Citation

Heyl, Erik. Early American Steamers. Buffalo: Erik Heyl, 1953.

MLA (9th ed.) Citation

Heyl, Erik. Early American Steamers. Erik Heyl, 1953.

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