APA (7th ed.) Zitazioa
Hiebert, C. E., Phelps, A., Yates, S. N., & Cave, S. (1999). Where light speaks. International Child Care Canada.
Chicago Style (17th ed.) Zitazioa
Hiebert, Carl E., Anthony Phelps, Sandy Noble Yates, eta Syto Cave. Where Light Speaks. Mississauga, Ont.: International Child Care Canada, 1999.
MLA (9th ed.) Zitazioa
Hiebert, Carl E., et al. Where Light Speaks. International Child Care Canada, 1999.
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