Jansen, U. H. (1960). Marking and reporting procedures in the secondary schools of Texas. Texas Study of Secondary Education.
Čikaški stil citiranja (17. izdanje)Jansen, Udo H. Marking and Reporting Procedures in the Secondary Schools of Texas. Austin: Texas Study of Secondary Education, 1960.
MLA način citiranja (8. izdanje)Jansen, Udo H. Marking and Reporting Procedures in the Secondary Schools of Texas. Texas Study of Secondary Education, 1960.
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