Cita APA (7a ed.)

Armstrong, C. J. (1996). World databases in agriculture. Bowker-Saur.

Cita Chicago Style (17a ed.)

Armstrong, C. J. World Databases in Agriculture. London [etc.]: Bowker-Saur, 1996.

Cita MLA (9a ed.)

Armstrong, C. J. World Databases in Agriculture. Bowker-Saur, 1996.