Presocratic Philosophy A Very Short Introduction - Catherine Osborne

APA（第7版）

Presocratic Philosophy A Very Short Introduction - Catherine Osborne. (n.d.).

芝加哥（第17版，作者-日期）

Presocratic Philosophy A Very Short Introduction - Catherine Osborne. n.d.

MLA（第9版）

Presocratic Philosophy A Very Short Introduction - Catherine Osborne.

哈佛

Presocratic Philosophy A Very Short Introduction - Catherine Osborne (no date).

牛津（乌梅奥）

Presocratic Philosophy A Very Short Introduction - Catherine Osborne. (n.d.).