APA

Plotino, Schwyzer H. R. & Henry P. (1982). Opera. Oxford: Clarendon Press.

Chicago

Plotino, Schwyzer Hans Rudolf and Henry Paul. 1982. Opera. Oxford: Clarendon Press.

Harvard

Plotino, Schwyzer H. R. and Henry P. (1982). Opera. Oxford: Clarendon Press.

MLA

Plotino, Schwyzer Hans Rudolf and Henry Paul. Opera. Oxford: Clarendon Press. 1982.