DASGUPTA MARY ANN. (2004). LOW- COST, NO- COST TEACHING AIDS.
Cita Chicago (17th ed.)DASGUPTA MARY ANN. LOW- COST, NO- COST TEACHING AIDS. 2004.
Cita MLA (9th ed.)DASGUPTA MARY ANN. LOW- COST, NO- COST TEACHING AIDS. 2004.
Atenció: Aquestes cites poden no estar 100% correctes.