Chronos Group, Observatoire de Paris-Meudon, & Centre national de la recherche scientifique (France). (1994). Frequency measurement and control (1st English language ed.). Chapman & Hall.
Citazione stile Chigago Style (17a edizione)Chronos Group, Observatoire de Paris-Meudon, e Centre national de la recherche scientifique (France). Frequency Measurement and Control. 1st English language ed. London: Chapman & Hall, 1994.
Citatione MLA (9a ed.)Chronos Group, et al. Frequency Measurement and Control. 1st English language ed. Chapman & Hall, 1994.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.