APA (7th ed.) Zitazioa
GOLDSON, B. (2000). SIMPLE TOUGHNESS MEETS TOUGH COMPLEXITY.
Chicago Style (17th ed.) Zitazioa
GOLDSON, B. SIMPLE TOUGHNESS MEETS TOUGH COMPLEXITY. 2000.
MLA (9th ed.) Zitazioa
GOLDSON, B. SIMPLE TOUGHNESS MEETS TOUGH COMPLEXITY. 2000.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.