APA Style
Verduin, John R.. ().
Distance education the foundations of effective practice .
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Chicago Style
Verduin, John R..
Distance education the foundations of effective practice.
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MLA Style
Verduin, John R..
Distance education the foundations of effective practice.
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,
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.
Turabian Style
Verduin, John R..
Distance education the foundations of effective practice.
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,
.
.