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.