op. cit.

In the case of citations — all that “op. cit.,” “cf.” and “passim” business — dispensing with them is a mercy.

A shouted question came from a store employee: “Does he want the companion volume by op. cit.?”

Effectiveness of comprehensible-input based instruction: Krashen, op. cit.;

J. Peckham, I, pp. 265-6, and in Wilkins, op. cit.

For the sufferings of Northern monasteries from the Scots 1330-50 see references collected from the patent rolls in P. G. Mode, op. cit. p.