Citazione Stile APA (7a Edizione)

Nagel, E., Bromberger, S., & Grünbaum, A. (1971). Observation and Theory in Science. Johns Hopkins Press.

Citazione stile Chigago Style (17a edizione)

Nagel, Ernest, Sylvain Bromberger, e Adolf Grünbaum. Observation and Theory in Science. Baltimore: Johns Hopkins Press, 1971.

Citatione MLA (9a ed.)

Nagel, Ernest, et al. Observation and Theory in Science. Johns Hopkins Press, 1971.