Rochmaniah, A.; Fajarini, E. Customer Service in Influencing Perceptions of New Students and Services of Upt PMB University of Muhammadiyah Sidoarjo : Customer Service Dalam Mempengaruhi Persepsi Mahasiswa Baru Dan Pelayanan Upt PMB Universitas Muhammadiyah Sidoarjo. Kanal 2020, 9, 33-37.