Cita APA (7a ed.)

Sierra Duque, C. M., & Álvarez, H. (2009). Two fuzziness indexes proposed by Kaufmann: Observations about them.

Cita Chicago Style (17a ed.)

Sierra Duque, Carlos M., y Hernán Álvarez. Two Fuzziness Indexes Proposed by Kaufmann: Observations About Them. 2009.

Cita MLA (8a ed.)

Sierra Duque, Carlos M., y Hernán Álvarez. Two Fuzziness Indexes Proposed by Kaufmann: Observations About Them. 2009.