1.
Modal testing. Taunton (Somerset), New York: Research studies press; 1986.
Modal testing. Taunton (Somerset), New York : Research studies press, 3 juin 1986. ISBN 0863800173
Ewins D. J. (1986). Modal testing: Theory and practice. Research studies press.
Style de citation MLA (8e éd.)Ewins D. J. Modal Testing: Theory and Practice. Research studies press, 1986.
Attention : ces citations peuvent ne pas être correctes à 100%.