Cita APA

Johnson, D. A. (1956). How to use field trips in mathematics. National Council of Teachers of Mathematics.

Citación estilo Chicago

Johnson, Donovan A. How to Use Field Trips in Mathematics. Washington, D. C: National Council of Teachers of Mathematics, 1956.

Cita MLA

Johnson, Donovan A. How to Use Field Trips in Mathematics. National Council of Teachers of Mathematics, 1956.

Warning: These citations may not always be 100% accurate.