APA-čujuhus (7. p.)

Roldán Clará, B., Calatayud Mendoza, A., & Panca-Galindo, J. W. (2021). Economic benefits to conserve a tourist resource case playa Chifron Puno Peru.

Chicago-čujuhus (17. p.)

Roldán Clará, Blanca, Alfredo Calatayud Mendoza, juo Jhesus W. Panca-Galindo. Economic Benefits to Conserve a Tourist Resource Case Playa Chifron Puno Peru. 2021.

MLA-čujuhus (9. p.)

Roldán Clará, Blanca, et al. Economic Benefits to Conserve a Tourist Resource Case Playa Chifron Puno Peru. 2021.

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