APA (7. basım) Alıntı

Freytag Löringhoff, B. B. v., & Brekle, H. E. (1967). L' art de penser: La logique de Port-Royal. Friedrich Frommann.

Chicago Style (17. basım) Atıf

Freytag Löringhoff, Bruno Baron von, ve Herbert E. Brekle. L' Art De Penser: La Logique De Port-Royal. Stuttgart: Friedrich Frommann, 1967.

MLA (9th ed.) Atıf

Freytag Löringhoff, Bruno Baron von, ve Herbert E. Brekle. L' Art De Penser: La Logique De Port-Royal. Friedrich Frommann, 1967.