Cita APA (7a ed.)

Danks, A. C. (1983). The ESO user's manual. [European Southern Observatory].

Cita Chicago Style (17a ed.)

Danks, Anthony C. The ESO User's Manual. [Garching]: [European Southern Observatory], 1983.

Cita MLA (9a ed.)

Danks, Anthony C. The ESO User's Manual. [European Southern Observatory], 1983.