Wendt, Alexander, author
Intrans, 2014
Buku Teks
Alexander Wendt, Jack S. Levy, Richard Little
Intrans Publishing, 2014
Buku Teks
Nursalam, author
Salemba Medika, 2014
Buku Teks
Lubis, Akhyar Yusuf, author
Akademia, 2004
Buku Teks
Harahap, Syahrin, author
Rajagrafindo Persada, 2000
Buku Teks