What is the format of the job advertisement in the newspaper?

There are three ways to publish job advertisements in newspapers. One is to publish large-scale hard advertisements, such as half-page full-page, which is very expensive and only suitable for large enterprises. The other is to do small homework columns, the general specifications are not very large, but the cost is still relatively conspicuous. The other is published in classified advertisements of newspapers, which has the lowest cost, but it needs to pay attention to the frequency, because it will not be too concerned in a pile of information.