Gaya APA
Pappas, J, L., Soerjani, M. (1997).
Environmental education for biodirersity and sustainable development (ke-1).
Jakarta:
LIPI Press.
Gaya MLA
Pappas, James, L., Soerjani, Mohamad.
"Environmental education for biodirersity and sustainable development".
ke-1
Jakarta:
LIPI Press,
1997.
Text.