Cita APA (7a ed.)
Blackwood, P. E. (1965). Science teaching in the elementary schools: A survey of practices.
Cita estilo Chicago (17a ed.)
Blackwood, Paul E. Science Teaching in the Elementary Schools: A Survey of Practices. 1965.
Cita MLA (9a ed.)
Blackwood, Paul E. Science Teaching in the Elementary Schools: A Survey of Practices. 1965.
Precaución: Estas citas no son 100% exactas.