The tangshan earthquake

11 You can use any reference style you’d like, so long as all the appropriate information is given and you are consistent. Use inline citations for citations throughout your text; see below for some guidelines on citing. Inline citations should have a format of (Author’s last name, year); if th e author is not given (say on a web page from a government site) use the agency’s name, for example, something from the US Geological Survey would be cited as (USGS, 2003) rather than (Anonymous, 2003). If you have more than one source from, say, the USGS from 2003, cite them as (USGS, 2003a) and (USGS, 2003b) and clearly denote which is which in your bibliography