Cita APA (7a ed.)

Roberts, F. S. (1972). Building an energy demand signed digraph. Rand Corporation.

Cita Chicago Style (17a ed.)

Roberts, Fred S. Building an Energy Demand Signed Digraph. Santa Monica, California: Rand Corporation, 1972.

Cita MLA (9a ed.)

Roberts, Fred S. Building an Energy Demand Signed Digraph. Rand Corporation, 1972.