APA (7th ed.) Zitazioa
Nada Lou, Petrović, G., Veugelers, R., & Verschoor, N. Children Focusing: Being Seriously Playful. Nada Lou Productions.
Chicago Style (17th ed.) Zitazioa
Nada Lou, Goran Petrović, René Veugelers, eta Nico Verschoor. Children Focusing: Being Seriously Playful. Montreal, Canadá: Nada Lou Productions.
MLA (9th ed.) Zitazioa
Nada Lou, et al. Children Focusing: Being Seriously Playful. Nada Lou Productions.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.