APA (7th ed.) Citation

Oldfather, W. A., Canter, H. V., & Abbott, K. M. (1965). Index verborum Ciceronis Epistolarum. Georg Olms.

Chicago Style (17th ed.) Citation

Oldfather, William Abbott, Howard Vernon Canter, and K. M. Abbott. Index Verborum Ciceronis Epistolarum. Hildesheim: Georg Olms, 1965.

MLA (9th ed.) Citation

Oldfather, William Abbott, et al. Index Verborum Ciceronis Epistolarum. Georg Olms, 1965.