N. B. Sukamdani, T. Sukwika, D. A. Kusumaningrum, Y. Sulistyadi, and F. Eddyono, “Revisit Decision to the Ragunan Zoological Gardens: Brand Image and Admission Price as Determination Factors”, Mantik, vol. 6, no. 3, pp. 3018-3027, Oct. 2022.