Indra Freddy
Pengaruh belanja melalui internet terhadap kepuasan konsumen dalam melakukan belanja melalui internet = Effect analysis of online shopping to satisfaction consumers in doing online shopping
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2013
 UI - Skripsi Membership
Grundy, Peter F.
Doing pragmatics
Edward Arnold, 1995
 Buku Teks
Marion Wesley Todd
Engineering surveys elementary
Macmillan, 1934
 Buku Teks
Sample surveys in the Escap rigion
United Nations-ESCAP , 1985
 Buku Teks
Reeves, Tom Kynaston
Surveys at work : a practioner’s guide
McGraw-Hill, 1981
 Buku Teks