Gaya APA

Dudley, O, F, , , , , -. (-1955). Last crescendo, the story of Paul Gray, (2nd impr.) Cet.pertama 1954. . London dsl: Longmans.

Gaya MLA

Dudley, Owen, Francis(, , , , , -1952).. "Last crescendo, the story of Paul Gray, (2nd impr.) Cet.pertama 1954. ". London dsl: Longmans, -1955. Buku.