Freemium Strategies
Homburg, C., Kuester, S., and Krohmer, H. (2013), Marketing Management: A Contemporary Perspective 2nd Edition. New York, USA: McGraw-Hill Education
Kotler, P. and Keller, K.L. (2016), Marketing Management 15th Edition Global Edition. Essex, United Kingdom: Pearson.
These books can be used to answer the questions but (own writing/words)
There answer and writing should be concerned with 2 topics only when analyzing, which are:
1. Strategies
2. Pricing decisions
