Field Formatter module provides a collection of generic formatters for entity reference fields that output only a specific field of the referenced entity. There are currently three formatters:

• Field formatter with inline settings (Entity reference fields)
• Field formatter from view display (Entity reference fields)
• Link field formatter, which will wrap output of any other formatter with a link (all fields)

1. Download Field Formatter from Drupal.org.
2. Install it in the usual way.

1. Create entity reference field:

• On admin/structure choose Content types.
• Choose content type entity reference field should be added to, for example: Article, and click Manage fields and then + Add field.
• From References dropdown choose Other, fill the Label and click Save and continue.
• Choose Type of item to reference, for example: Content, and click Save field settings.
• Select which content types you want to reference in Reference type section, for example: Article, and click Save settings.

2. Choose field formatter for your entity reference field:

• Open Manage display page for the selected content type (in our case Article).
• Choose which formatter you want to use, Field formatter with inline settings or Field formatter from view display.
• In formatter settings define which field from the referenced entity you want to display in your article.
• You also need to configure View mode if you're using Field formatter from view display.
• Click Update and then Save.

1. Go to your entity's manage display page.
2. On the field you want to be wrapped with a link, select the formatter to be Field Linker.
3. This will wrap this field in a link pointing to the main entity's URL.