APA (7th ed.) Citation

Kracht, M. (1990). Internal definability and completeness in modal logic.

Chicago Style (17th ed.) Citation

Kracht, Marcus. Internal Definability and Completeness in Modal Logic. 1990.

MLA (9th ed.) Citation

Kracht, Marcus. Internal Definability and Completeness in Modal Logic. 1990.

Warning: These citations may not always be 100% accurate.