Crossman, Ashley. "Isang Pangkalahatang-ideya ng Qualitative Research Methods." Greelane, Peb. 16, 2021, thoughtco.com/qualitative-research-methods-3026555. Crossman, Ashley. (2021, Pebrero 16). Isang Pangkalahatang-ideya ng Mga Paraan ng Kwalitatibong Pananaliksik. Nakuha mula sa https://www.thoughtco.com/qualitative-research-methods-3026555 Crossman, Ashley. "Isang Pangkalahatang-ideya ng Qualitative Research Methods." Greelane. https://www.thoughtco.com/qualitative-research-methods-3026555 (na-access noong Hulyo 21, 2022).