Marker, A. Properties and Characteristics of Optical Glass II. SPIE Digital Library.
Chicago-viite (17. p.)Marker, Alexander. Properties and Characteristics of Optical Glass II. SPIE Digital Library.
MLA-viite (8. p.)Marker, Alexander. Properties and Characteristics of Optical Glass II. SPIE Digital Library.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.