Hitchcock, A. (1984). Alfred Hitchcock & Trio Detektif dalam Misteri Tengkorak Bersuara. Gramedia.
Chicago Style (17th ed.) CitationHitchcock, Alfred. Alfred Hitchcock & Trio Detektif Dalam Misteri Tengkorak Bersuara. Gramedia, 1984.
MLA (8th ed.) CitationHitchcock, Alfred. Alfred Hitchcock & Trio Detektif Dalam Misteri Tengkorak Bersuara. Gramedia, 1984.
Warning: These citations may not always be 100% accurate.