APA

Ple A., O'Connell M. J. (., .Duty or pleasure?. New York: .

Chicago

Ple Albert, O'Connell Matthew J (tr), .Duty or pleasure?. New York: .

Harvard

Ple A., O'Connell M. J. (., .Duty or pleasure?. New York: .

MLA

Ple Albert, O'Connell Matthew J (tr), .New York: . .