APA Style
Richards, Roy. (1992).
On Nature .
-:
Young Books.
Chicago Style
Richards, Roy.
On Nature.
-:
Young Books,
1992.
Non-fiction.
MLA Style
Richards, Roy.
On Nature.
-:
Young Books,
1992.
Non-fiction.
Turabian Style
Richards, Roy.
On Nature.
-:
Young Books,
1992.
Non-fiction.