Greg Byrd; Lynn Byrd; Chris Pearce. (2012). Cambridge Checkpoint Mathematics Coursebook 7 (Cambridge International Examinations). CAMBRIDGE UNIVERSITY PRESS.
Lua i Stíl Chicago (17ú heag.)Greg Byrd; Lynn Byrd; Chris Pearce. Cambridge Checkpoint Mathematics Coursebook 7 (Cambridge International Examinations). CAMBRIDGE UNIVERSITY PRESS, 2012.
Lua MLA (9ú heag.)Greg Byrd; Lynn Byrd; Chris Pearce. Cambridge Checkpoint Mathematics Coursebook 7 (Cambridge International Examinations). CAMBRIDGE UNIVERSITY PRESS, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.