Abbreviations used in academic references

And others (et al.)

  • The latin is et alli, abbreviated to et al.
  • Et al. is used to indicate a list of authors in a reference; for example, Glassop, et al. 
  • Generally, always list all authors the first time, after that you can use the first author and et al.
  • Always consult your official reference style guide to check the requirements
The same place (ibid.)
  • The latin is ibidem, abbreviated to ibid.
  • When repeating a citation consecutively, you can put ibid. to indicate that the reference is exactly same as the previous one
  • For example, (ibid.)
  • If ibid. is used in a footnote, use a capital I: Ibid.
In the place cited (loc. cit.)
  • The latin is loco citato, abbreviated to loc. cit.
  • An alternative meaning is: in the same location
  • When repeating a citation, you can put loc. cit. to indicate that the reference is the same resource (author/s and date) and the same citation location (i.e., page number or paragraph) as the previous one
  • For example, “Smith (loc. cit.), also claims that…”
In the work cited (op. cit.)
  • The latin is opere citato, abbreviated to op. cit.
  • When repeating a citation, you can  put op. cit. to indicate that the reference is the same resource (author/s and date) as the previous one (but the citation location, i.e., page or paragraph number, is different)
  • For example (op. cit., p.3)
Tip:

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