Frauenfelder, P. (Paul)
Introduction to physics; Vol. 1
Pergamon Press, 1966
Buku Teks SO
Ensiklopedia flora
Yuzammi [and others]
Kharisma Ilmu, 2010
Buku Referensi
Backer, C. A.
Flora of Java
Wolter Noordhoff, 1968
Buku Referensi
Date, C.J.
An introduction to database systems; Vol. 1
Addison-Wesley, 1990
Buku Teks SO
King, George, Sir
Flora of the Malayan Peninsula
Mehra Offset Press, 1986
Buku Teks