APA-ийн эшлэл(7 дахь хэвлэлт)

Kearl, B. (1976). Field data collection in the social sciences: Experiences in Africa and the middle East. Agricultural development council.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Kearl, Bryant. Field Data Collection in the Social Sciences: Experiences in Africa and the Middle East. New York: Agricultural development council, 1976.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Kearl, Bryant. Field Data Collection in the Social Sciences: Experiences in Africa and the Middle East. Agricultural development council, 1976.