Thresholds in Education Foundation. Thresholds in education. [Thresholds in Education Foundation].
Cita Chicago (17th ed.)Thresholds in Education Foundation. Thresholds in Education. [DeKalb, Ill.]: [Thresholds in Education Foundation].
Cita MLA (9th ed.)Thresholds in Education Foundation. Thresholds in Education. [Thresholds in Education Foundation].
Atenció: Aquestes cites poden no estar 100% correctes.