APA (7th ed.) Citation

Langstroth, L. L. (2008). Langstroth on the Hive and the Honey-Bee A Bee Keeper's Manual. Project Gutenberg.

Chicago Style (17th ed.) Citation

Langstroth, L. L. Langstroth on the Hive and the Honey-Bee A Bee Keeper's Manual. Project Gutenberg, 2008.

MLA (9th ed.) Citation

Langstroth, L. L. Langstroth on the Hive and the Honey-Bee A Bee Keeper's Manual. Project Gutenberg, 2008.

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