Case study is an epistemolgy and ontology - and relevant to your research areas. Illustrated here:

Article Public-Private Partnerships (PPP) in Africa: Harking the Holonomic

According to Hirschman and  Holbrook (1986), like any research tradition, the study of consumer behavior reflects certain onto-logical and methodological assumptions whose continual modification constitutes a necessary aspect of evolutionary progress (Laudan, 1977). Thus, Laudan (1977) defines the ontology of a research tradition as “the types of fundamental entities which exist in the domain” together with “the different modes by which these entities can interact” and its methodology as “certain modes of procedure which constitute the legitimate methods of inquiry” (p. 79).

Ontology has recently been rediscovered, and overhauled, for the purposes of Artificial Intelligence. Ontology has been concerned with the properties of objects, with their modes of existence and with questions such as how they can be divided in parts and how they fill space. Based on an interesting study by Andrew U. Frank entitled: " Ontology: a consumer’s point of view" (available at: http://www.dpi.inpe.br/geopro/referencias/ontology_af.pdf) he built a simple metaphor: ontologies are products and are sold in the international supermarket of AI research. In the chosen supermarket, consumers look for ontologies which fulfill their particular needs.

I think, there are three main examples or conditions of epistemology: truth, belief and justification. I think any research paper in marketing can justify these aspects

Article Measuring and Comparing the Desired and Actual Service Quali...

Article Impact of Digitalization on Holy Quran Readers; Experience a...

Article Customer-based brand equity and firms' performance in the te...

Article The Impact of Training and Development on Employee Performance

Article A Conceptual Framework to Measure Economic Growth of Afghanistan

Book Customer Experience Management A Handbook to Acquire and Ret...

I see innocent searches, which ask potential consumers directly such things as "would you buy Product X?"