Cita APA (7a ed.)

Geach, P. T. (1971). Mental acts: Their content and their objects. Routledge & Kegan Paul.

Cita Chicago Style (17a ed.)

Geach, P. T. Mental Acts: Their Content and Their Objects. London [etc.]: Routledge & Kegan Paul, 1971.

Cita MLA (9a ed.)

Geach, P. T. Mental Acts: Their Content and Their Objects. Routledge & Kegan Paul, 1971.