Virginia, Chrisya and Nawangwulan, Irma (2017) The Impact of Customer Value, E-Service Quality and Customer Trust Towards Repurchase Intention Behavior on Online Travel Agency (in Case Study: Tiket.Com). Bachelor thesis, Swiss German University.

Yonathan, Everline and Nawangwulan, Irma (2017) The Impact of Service Environment and Restaurant Product Towards Brand Loyalty in Eric Kayser Artisan Boulanger, Plaza Senayan. Bachelor thesis, Swiss German University.

Noya, Marco Randy Parama and Nawangwulan, Irma and Zainal, Munawaroh (2016) Analysis of Herzberg Two-Factor Motivational Theory on Retail Store Employees in BSD City, Tangerang, Indonesia. Bachelor thesis, Swiss German University.