APA stil citiranja

(1990). 4GL language reference: 4GL language reference : empress : version 4. [s.l.]: Empress software inc.

Chicago stil citiranja

4GL language reference: 4GL language reference : empress : version 4. [s.l.]: Empress software inc, 1990.

MLA stil citiranja

4GL language reference: 4GL language reference : empress : version 4. [s.l.]: Empress software inc, 1990.

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