Gaya APA
Samson, P, R., Pitt, D. (1999).
The Biosphere and Noosphere Reader : global environment, society and change .
London:
Routledge.
Gaya MLA
Samson, Paul, R.., Pitt, David.
"The Biosphere and Noosphere Reader : global environment, society and change".
London:
Routledge,
1999.
Text.