APA (7th ed.) Citation

Penfold, R. A. (1992). Circuit source / R. A. Penfold. Bernard Babani.

Chicago Style (17th ed.) Citation

Penfold, R. A. Circuit Source / R. A. Penfold. Bernard Babani, 1992.

MLA (9th ed.) Citation

Penfold, R. A. Circuit Source / R. A. Penfold. Bernard Babani, 1992.

Warning: These citations may not always be 100% accurate.