(2007). [Stöpselkarten a]: [Montessori Material]. [Nienhuis].
Chicago Style (17th ed.) Citation[Stöpselkarten a]: [Montessori Material]. [Zelhem]: [Nienhuis], 2007.
MLA (9th ed.) Citation[Stöpselkarten a]: [Montessori Material]. [Nienhuis], 2007.
Warning: These citations may not always be 100% accurate.