Yorman, Ivan Setiawan (2017) Pengaruh service quality, customer satisfaction, access convenience, switching costs, brand trust, dan brand affect terhadap brand loyalty pada pelanggan di industri gas station Pertamina dan Shell di Jabodetabek. Masters thesis, Universitas Pelita Harapan.

Yorman, Ivan Setiawan (2017) Pengaruh service quality, customer satisfaction, access convenience, switching cost, brand trust dan brand affect terhadap brand loyalty pada pelangga. Masters thesis, Universitas Pelita Harapan.