Symko-Davies, M. High and Low Concentration for Solar Electric Applications III. SPIE Digital Library.
Chicago-viite (17. p.)Symko-Davies, Martha. High and Low Concentration for Solar Electric Applications III. SPIE Digital Library.
MLA-viite (9. p.)Symko-Davies, Martha. High and Low Concentration for Solar Electric Applications III. SPIE Digital Library.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.