Cita APA (7a ed.)

Tribe, M., & Pritchard, A. J. (1984). Biological systems, energy sources and biology teaching. Unesco.

Cita Chicago Style (17a ed.)

Tribe, Michael, y Alan J. Pritchard. Biological Systems, Energy Sources and Biology Teaching. París: Unesco, 1984.

Cita MLA (8a ed.)

Tribe, Michael, y Alan J. Pritchard. Biological Systems, Energy Sources and Biology Teaching. Unesco, 1984.