APA (7th ed.) Citation

Ramanujan Aiyangar, S., Berndt, B. C., & Rankin, R. A. (1995). Ramanujan: Letters and commentary. American Mathematical Society. https://doi.org/10.1090/hmath/009

Chicago Style (17th ed.) Citation

Ramanujan Aiyangar, Srinivasa, Bruce C. Berndt, and Robert A. Rankin. Ramanujan: Letters and Commentary. Providence, R.I: American Mathematical Society, 1995. https://doi.org/10.1090/hmath/009.

MLA (9th ed.) Citation

Ramanujan Aiyangar, Srinivasa, et al. Ramanujan: Letters and Commentary. American Mathematical Society, 1995. https://doi.org/10.1090/hmath/009.