Citazione Stile APA (7a Edizione)

Ustinov, P. (1961). We were only human (1. Aufl.). Heinemann.

Citazione stile Chigago Style (17a edizione)

Ustinov, Peter. We Were Only Human. 1. Aufl. London [u.a.]: Heinemann, 1961.

Citatione MLA (8a ed.)

Ustinov, Peter. We Were Only Human. 1. Aufl. Heinemann, 1961.