A guideline:
A literature review is an account of what has been published on a topic by accredited scholars and researchers. Besides enlarging your knowledge about the topic, a literature review lets you gain and demonstrate skills in 2 key areas:
1. Information seeking: the ability to scan the literature efficiently, using manual or computerised methods to identify a set of useful articles and books.
2. Critical appraisal: the ability to apply principles of analysis to identify unbiased and valied studies.
This is the research paper and write about fixed monthly sales will motivate people performed with negative attitutes and behaviours such as frau, making fake sales report, begging and annoying customers, and so on.
Cite it in proper way.