Munawir, A., A. Armawan, and N. Nurhasanah. “Valuation of Environmental Services City Park 1 BSD Using the Travel Cost Method (TCM) and Willingness To Pay (WTP)”. Amalee: Indonesian Journal of Community Research and Engagement, Vol. 4, no. 2, June 2023, pp. 415-26, doi:10.37680/amalee.v4i2.2925.