Freeman, K. (1948). Ancilla to the Pre-Socratic Philosophers: By Kathleen Freeman (1st publ.). Blackwell.
Citazione stile Chigago Style (17a edizione)Freeman, Kathleen. Ancilla to the Pre-Socratic Philosophers: By Kathleen Freeman. 1st publ. Oxford: Blackwell, 1948.
Citatione MLA (8a ed.)Freeman, Kathleen. Ancilla to the Pre-Socratic Philosophers: By Kathleen Freeman. 1st publ. Blackwell, 1948.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.