Cita APA (7th ed.)

Gregory, K. (1976). The First cuckoo: A selection of the most witty, amusing and memorable letters to The Times, 1900-1975. Times Books: Allen and Unwin.

Cita Chicago (17th ed.)

Gregory, Kenneth. The First Cuckoo: A Selection of the Most Witty, Amusing and Memorable Letters to The Times, 1900-1975. London: Times Books: Allen and Unwin, 1976.

Cita MLA (8th ed.)

Gregory, Kenneth. The First Cuckoo: A Selection of the Most Witty, Amusing and Memorable Letters to The Times, 1900-1975. Times Books: Allen and Unwin, 1976.