On the left side of the screen you will see filtering options by Content Type. This will give you the option to select the type of source you are looking for.

Journal articles and books are automatically selected.

Feel free to select and deselect based on your content type needs.

The selections in the Content Type panel should correspond with descriptions in the record for the source.

Finally, Library OneSearch has a few features that can assist you. Primarily the "Cite this item" tool (represented by "quotation" marks), which will produce for you a draft citation in the format that you select.