APA
(1996). Let's investigate science Natural resources. Hong Kong: Grahan Beehag Book Design.
Chicago
1996. Let's investigate science Natural resources. Hong Kong: Grahan Beehag Book Design.
Harvard
(1996). Let's investigate science Natural resources. Hong Kong: Grahan Beehag Book Design.
MLA
Let's investigate science Natural resources. Hong Kong: Grahan Beehag Book Design. 1996.