APA
House P., House S., . (2012). Science and geography 3 : teachers guide. México: México D.F: Richmond.
Chicago
House Paúl, House Susan, . 2012. Science and geography 3 : teachers guide. México: México D.F: Richmond.
Harvard
House P., House S., . (2012). Science and geography 3 : teachers guide. México: México D.F: Richmond.
MLA
House Paúl, House Susan, . Science and geography 3 : teachers guide. México: México D.F: Richmond. 2012.