APA (7th ed.) Citation

Heatley, H. R., Kingdon, H. N., & Collar, W. C. (1889). Gradatim: An easy Latin translation book for beginners (Rev. for American schools.). Ginn and company.

Chicago Style (17th ed.) Citation

Heatley, H. R., H. N. Kingdon, and William C. Collar. Gradatim: An Easy Latin Translation Book for Beginners. Rev. for American schools. Boston: Ginn and company, 1889.

MLA (9th ed.) Citation

Heatley, H. R., et al. Gradatim: An Easy Latin Translation Book for Beginners. Rev. for American schools. Ginn and company, 1889.