Gaya APA
Razzaq, A. (2010).
A study on cohesive devices used in social science textbooks .
Tulungagung:
STAIN Tulungagung.
Gaya MLA
Razzaq, Abdul.
"A study on cohesive devices used in social science textbooks".
Tulungagung:
STAIN Tulungagung,
2010.
Skripsi.