Cita APA (7a ed.)
Arnold, A. (1990). CAAP '90: Konf. 15th colloquium on tress in algebra and programming, Copenhagen, Denmark, 15.- 18. May 1990. Springer Verlag.
Cita Chicago Style (17a ed.)
Arnold, A. CAAP '90: Konf. 15th Colloquium on Tress in Algebra and Programming, Copenhagen, Denmark, 15.- 18. May 1990. Berlin: Springer Verlag, 1990.
Cita MLA (9a ed.)
Arnold, A. CAAP '90: Konf. 15th Colloquium on Tress in Algebra and Programming, Copenhagen, Denmark, 15.- 18. May 1990. Springer Verlag, 1990.
Precaución: Estas citas no son 100% exactas.