Gaya APA
Samiyana, S.. ().
Programmed English : a self-instructional course 4 .
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Gaya Chicago
Samiyana, S..
Programmed English : a self-instructional course 4.
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Text.
Gaya MLA
Samiyana, S..
Programmed English : a self-instructional course 4.
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Text.
Gaya Turabian
Samiyana, S..
Programmed English : a self-instructional course 4.
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Print.