HIGGINS, J. Di ambang neraka. Gramedia Pustak.
Chicago Style (17th ed.) CitationHIGGINS, Jack. Di Ambang Neraka. Gramedia Pustak.
MLA (8th ed.) CitationHIGGINS, Jack. Di Ambang Neraka. Gramedia Pustak.
Warning: These citations may not always be 100% accurate.