Regina Damaris
Fakultas Hukum Universitas Indonesia, 2019
UI - Skripsi (Membership)
Shank, Patti
American Society for Training & Development, 2010
eBooks
Muhammad Raihan
Fakultas Teknik Universitas Indonesia, 2019
UI - Skripsi (Membership)
Adriani
1990
UI - Skripsi (Membership)
Best, Robert
Longman Group Limited, 1986
Buku Teks