Gupta, S. (2016). *Packaging rules: Powerful techniques for packaging designers.* Bloomsbury Publishing. provide the correct scholar

The citation you've provided for the book by S. Gupta appears to be in a standard format, but if you're looking for a way to present it in a more formal academic context, you can consider the following APA-style format: Gupta, S. (2016). *Packaging rules: Powerful techniques for packaging designers*. Bloomsbury Publishing. If you're looking for a different citation style (MLA, Chicago, etc.), please specify, and I can help you convert it accordingly!