APA-Zitierstil (7. Ausg.)

Fortune, S., Hopcroft, J. E., & Wyllie, J. (1978). The directed subgraph homeomorphism problem.

Chicago-Zitierstil (17. Ausg.)

Fortune, Steven, John E. Hopcroft, und James Wyllie. The Directed Subgraph Homeomorphism Problem. Ithaca, New York, 1978.

MLA-Zitierstil (9. Ausg.)

Fortune, Steven, et al. The Directed Subgraph Homeomorphism Problem. 1978.