Cita APA (7a ed.)

Sluga, H. D. (1980). Gottlob Frege. Routledge & Kegan Paul.

Cita Chicago Style (17a ed.)

Sluga, Hans D. Gottlob Frege. London [etc.]: Routledge & Kegan Paul, 1980.

Cita MLA (9a ed.)

Sluga, Hans D. Gottlob Frege. Routledge & Kegan Paul, 1980.