Gaya APA
Shanker, V. (1995).
200 Comprehensive Letter Writing For All Occasions (Third Edition).
Singapore:
S.S Mubaruk & Brothers PTE LTD.
Gaya MLA
Shanker, V..
"200 Comprehensive Letter Writing For All Occasions".
Third Edition
Singapore:
S.S Mubaruk & Brothers PTE LTD,
1995.
Textbook.