Cita APA (7th ed.)
Vajravelu, K., & Prasad, K. V. (2014). Keller-box method and its application. De Gruyter/Higher Education Press.
Cita Chicago (17th ed.)
Vajravelu, Kuppalapalle, i Kerehalli V. Prasad. Keller-box Method and Its Application. Berlin ; Boston: De Gruyter/Higher Education Press, 2014.
Cita MLA (9th ed.)
Vajravelu, Kuppalapalle, i Kerehalli V. Prasad. Keller-box Method and Its Application. De Gruyter/Higher Education Press, 2014.
Atenció: Aquestes cites poden no estar 100% correctes.