Canon, Kristine Sampung magkakaibigan : kabilang sa seryeng matematika / Kristine Canon. - Quezon City : Adarna House, 2008. - [unpaged] : col. ill.; 23 cm. ISBN: 978-971-508-315-7 Subjects--Personal Names: Subjects--Corporate Names: Dewey Class. No.: Fic C164s 2008