Refers
to knowledge that
explains aspects of one discipline in terms of another. Something that can
define a system, task or investigation movement which can scrutinise a theme
external the choice the correction without support or incorporation from the other
appropriate disciplines. In cross-disciplinary, subjects are considered by
external procedures of distinct disciplines. Common examples of
cross-disciplinary approaches are studies of the physics of music or the politics of literature .

Interdisciplinary: The study, or practice, of a subject which applies the
methods and approaches of several disciplines. For instance, while History,
Literature and Archaeology are separate disciplines, they can be combined.

Qualitative
research methods originated in the social and behavioural sciences: sociology,
anthropology and psychology. Today, qualitative methods in the field of
marketing research include in-depth interviews with individuals, group
discussions (from two to ten participants is typical); diary and journal
exercises; and in-context observations. Sessions may be conducted in person, by
telephone, via video conferencing and via the Internet.
Ethnography research: Focuses on
cultural interpretation, for the purposes of description or extension of social
theory.
Ethnography is a systematic study of a
particular cultural group or phenomenon, based upon extensive fieldwork in one
or more selected locales.