Source: https://www.researchgate.net/profile/Bastien-Soule/publication/237661622_Observation_participante_ou_participation_observante_Usages_et_justifications_de_la_notion_de_participation_observante_en_sciences_sociales/links/0a85e52ed0d592fb52000000/Observation-participante-ou-participation-observante-Usages-et-justifications-de-la-notion-de-participation-observante-en-sciences-sociales.pdf