http://repository.uhamka.ac.id/id/eprint/15101/
Penilaian Konsumen Terhadap Kualitas Pelayanan GO-JEK Shelter Mall Fx Jl. Sudirman, Jakarta selatan.
Saputra, Ari Wahyu
http://repository.uhamka.ac.id/id/eprint/15101/1/FISIP_ILKOM_0806015020_ARI%20WAHYU%20SAPUTRA.pdf