एपीए उद्धरण

Tyrrell, J. e., Tyrrell, J., & Semple, J. (1971). Generalised clifford parallelism. Cambridge University press.

शिकागो स्टाइल उद्धरण

Tyrrell, J.A ed, J.A Tyrrell, और J.G Semple. Generalised Clifford Parallelism. Cambridge: Cambridge University press, 1971.

एमएलए उद्धरण

Tyrrell, J.A ed, et al. Generalised Clifford Parallelism. Cambridge University press, 1971.