Information Journal Paper
APA:
CopyFENNELL, D.A., & EAGLES, P.F.J.. (1990). ECOTOURISM IN COSTA RICA: A CONCEPTUAL FRAMEWORK. JOURNAL OF PARK AND RECREATION ADMINISTRATION, 8(1), 0-0. SID. https://sid.ir/paper/584808/en
Vancouver:
CopyFENNELL D.A., EAGLES P.F.J.. ECOTOURISM IN COSTA RICA: A CONCEPTUAL FRAMEWORK. JOURNAL OF PARK AND RECREATION ADMINISTRATION[Internet]. 1990;8(1):0-0. Available from: https://sid.ir/paper/584808/en
IEEE:
CopyD.A. FENNELL, and P.F.J. EAGLES, “ECOTOURISM IN COSTA RICA: A CONCEPTUAL FRAMEWORK,” JOURNAL OF PARK AND RECREATION ADMINISTRATION, vol. 8, no. 1, pp. 0–0, 1990, [Online]. Available: https://sid.ir/paper/584808/en