APA Style

RIORDAN, R. (). HEROES OF OLYMPUS THE SON OF NEPTUNE (PERCY JACKSON IS BACK) (1). : PUFFIN BOOKS N DELHI 2011.

MLA Style

RIORDAN, RICK. "HEROES OF OLYMPUS THE SON OF NEPTUNE (PERCY JACKSON IS BACK)". 1 : PUFFIN BOOKS N DELHI 2011, . Text.