APA (7th ed.) Citation

Hackstaff, L. H. (1966). Systems of Formal Logic. Springer Netherlands.

Chicago Style (17th ed.) Citation

Hackstaff, L. H. Systems of Formal Logic. Dordrecht: Springer Netherlands, 1966.

MLA (9th ed.) Citation

Hackstaff, L. H. Systems of Formal Logic. Springer Netherlands, 1966.

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