APA aipamena

Casley, D. J. L. (1987). Data collection in developing countries (2.).

Chicago Style aipamena

Casley, D J; Lury. Data Collection in Developing Countries. 2. English Language Book Society, London, 1987.

MLA aipamena

Casley, D J; Lury. Data Collection in Developing Countries. 2. 1987.