APA način citiranja (7. izdanje)
Ercival, W. P. (1927). Study of the causes and subjects of school failure.
Čikaški stil citiranja (17. izdanje)
Ercival, Walter Pilling. Study of the Causes and Subjects of School Failure. New York, 1927.
MLA način citiranja (9. izdanje)
Ercival, Walter Pilling. Study of the Causes and Subjects of School Failure. 1927.
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