APA (7th ed.) Citation

Chadwick, H. (2005). Spalding's Baseball Guide and Official League Book for 1889. Project Gutenberg.

Chicago Style (17th ed.) Citation

Chadwick, Henry. Spalding's Baseball Guide and Official League Book for 1889. Project Gutenberg, 2005.

MLA (9th ed.) Citation

Chadwick, Henry. Spalding's Baseball Guide and Official League Book for 1889. Project Gutenberg, 2005.

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