Silva, D. Observatory Operations: Strategies, Processes, and Systems. SPIE Digital Library.
Citazione stile Chigago Style (17a edizione)Silva, David. Observatory Operations: Strategies, Processes, and Systems. SPIE Digital Library.
Citatione MLA (9a ed.)Silva, David. Observatory Operations: Strategies, Processes, and Systems. SPIE Digital Library.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.