Thresholds in Education Foundation. Thresholds in education. [Thresholds in Education Foundation].
Citazione stile Chigago Style (17a edizione)Thresholds in Education Foundation. Thresholds in Education. [DeKalb, Ill.]: [Thresholds in Education Foundation].
Citatione MLA (9a ed.)Thresholds in Education Foundation. Thresholds in Education. [Thresholds in Education Foundation].
Attenzione: Queste citazioni potrebbero non essere precise al 100%.