Cita APA (7a ed.)

Merrell, F. (1985). A semiotic theory of texts. Mouton de Gruyter.

Cita Chicago Style (17a ed.)

Merrell, Floyd. A Semiotic Theory of Texts. Berlin [etc.]: Mouton de Gruyter, 1985.

Cita MLA (9a ed.)

Merrell, Floyd. A Semiotic Theory of Texts. Mouton de Gruyter, 1985.