Opera omnia.
Ad fidem codicum recensuit Franciscus Salesius Schmitt.

APA Citation

Anselm, S., Schmitt, F. Salesius. (1968). Opera omnia. Stuttgart-Bad Cannstatt: F. Fromman Verlag (G. Holzboog).

MLA Citation

Anselm, Saint, Archbishop of Canterbury, 1033-1109, and Franciscus Salesius Schmitt. Opera Omnia. Stuttgart-Bad Cannstatt: F. Fromman Verlag (G. Holzboog), 1968.

Warning: These citations may not always be complete (especially for serials).