Artikel Jurnal
Hammer, Bjarne, author
Roads, 2014
Buku Referensi
Design Media Publishing Limited, 2010
Buku Referensi
Khan, Aga, author
Simon & Schuster, 1954
Buku Teks
Tambun, Evlyn Dwi, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2020
UI - Tesis (Membership)