APA (7th ed.) Citation

Gale (Firm). The Elements of plane and spherical trigonometry.

Chicago Style (17th ed.) Citation

Gale (Firm). The Elements of Plane and Spherical Trigonometry.

MLA (9th ed.) Citation

Gale (Firm). The Elements of Plane and Spherical Trigonometry.

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