Cita APA (7a ed.)

Pickering, W. R. (1990). Information sources in pharmaceuticals. Bowker-Saur.

Cita Chicago Style (17a ed.)

Pickering, W. R. Information Sources in Pharmaceuticals. London [etc.]: Bowker-Saur, 1990.

Cita MLA (9a ed.)

Pickering, W. R. Information Sources in Pharmaceuticals. Bowker-Saur, 1990.