APA Style

Harcourt, H, M. (2013). How are living things connected to their ecosystem? (G3 Red 10) . : Houghton Mifflin Harcourt Publishing Company..

MLA Style

Harcourt, Houghton, Mifflin. "How are living things connected to their ecosystem? (G3 Red 10)". : Houghton Mifflin Harcourt Publishing Company., 2013. BOOK.