Schofield, W.B.
Introduction to bryology
Blackburn Press, 2001
Buku Teks
Introduction to .....
Buku Teks
Framkin
An Introduction to .........
Buku Teks
Steidel, Robert F.
An Introduction to.......
Buku Teks
Rothwell, David M.
Databases: an introduction
McGraw-Hill, 1993
Buku Teks