Gaya APA
Balkwill, D, F., Rolph, M.
(1990).
Cell Are Us
.
Sebastopol, CA:
Bhuana Ilmu Populer.
Gaya MLA
Balkwill, Dr, Fran., Rolph, Mic.
"Cell Are Us".
Sebastopol, CA:
Bhuana Ilmu Populer,
1990.
Text.