Cita APA (7th ed.)

(1973). Twistor theory: An approach to the quantisation of fields and space-time / R. Penrose and M.A.H. MacCallum.

Cita Chicago (17th ed.)

Twistor Theory: An Approach to the Quantisation of Fields and Space-time / R. Penrose and M.A.H. MacCallum. 1973.

Cita MLA (9th ed.)

Twistor Theory: An Approach to the Quantisation of Fields and Space-time / R. Penrose and M.A.H. MacCallum. 1973.