APA (7th ed.) Citation

Todhunter, I. (2006). Spherical Trigonometry: For the Use of Colleges and Schools. Project Gutenberg.

Chicago Style (17th ed.) Citation

Todhunter, I. Spherical Trigonometry: For the Use of Colleges and Schools. Project Gutenberg, 2006.

MLA (9th ed.) Citation

Todhunter, I. Spherical Trigonometry: For the Use of Colleges and Schools. Project Gutenberg, 2006.

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