Rahayu, R. A. (2010). A Comparative Study On RSBI and Reguler English programs in SMP N 1 Galur Kulon Progo at 7 grade in the academic year of 2009/2010. Yogyakrata : Ahmad Dahlan.
Čikaški stil citiranja (17. izdanje)Rahayu, Richa Adiati. A Comparative Study On RSBI and Reguler English Programs in SMP N 1 Galur Kulon Progo at 7 Grade in the Academic Year of 2009/2010. Yogyakrata : Ahmad Dahlan, 2010.
MLA način citiranja (8. izdanje)Rahayu, Richa Adiati. A Comparative Study On RSBI and Reguler English Programs in SMP N 1 Galur Kulon Progo at 7 Grade in the Academic Year of 2009/2010. Yogyakrata : Ahmad Dahlan, 2010.
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