PAL, P. P. (2012). FRANK MODERN CERTIFICATE PHYSICS FOR MIDDLE SCHOOL CLASS- VIII. FRANK BROS & CO.
Chicago-viite (17. p.)PAL, PARTHA. PRATIM. FRANK MODERN CERTIFICATE PHYSICS FOR MIDDLE SCHOOL CLASS- VIII. FRANK BROS & CO, 2012.
MLA-viite (9. p.)PAL, PARTHA. PRATIM. FRANK MODERN CERTIFICATE PHYSICS FOR MIDDLE SCHOOL CLASS- VIII. FRANK BROS & CO, 2012.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.