Bridges, William
New York, 1991
Buku Teks
Harrington, Nicki, author
Lippincott , 1996
Buku Teks
Zerwekh, JoAnn Graham, author
2012
Buku Teks
Päivi Tynjälä, Marja-Leena Stenström, Marjatta Saarnivaara, editors
Springer, 2012
eBooks
Nur Atikah Tadjuddin, author
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2019
UI - Skripsi (Membership)