Marcos, F. E. (1968). The responsibility of youth. [publisher not identified].
Chicago Style (17th ed.) CitationMarcos, Ferdinand E. The Responsibility of Youth. [place of publication not identified]: [publisher not identified], 1968.
MLA (9th ed.) CitationMarcos, Ferdinand E. The Responsibility of Youth. [publisher not identified], 1968.
Warning: These citations may not always be 100% accurate.