Is it bad to cite every sentence?

No, because each instance of quoted or paraphrased information within a paragraph needs a citation. One citation at the end of a paragraph only notes that the last sentence of the paragraph came from the cited source.

How do you cite the same source twice?

Consecutive references: When you are referencing the same source in two (or more) footnotes the second and subsequent references should be entered as “Ibid.” and the page number for the relevant footnote. Use “Ibid.” without any page number if the page is the same as the previous reference.

How do you use Ibid in Harvard referencing?

Use “ibid.” (no italics) to refer to the only work cited in the preceding note. It may or may not include a page number (Ibid., 43.). Ibid. is never used if the preceding note consists of more than one source. Do not use “op.

Can I use Ibid in Harvard referencing?

Ibid. may also be used in the Harvard (name-date) system for in-text references where there has been a close previous citation from the same source material. The previous reference should be immediately visible, e.g. within the same paragraph or page.