Cita APA

Stokking, K. M., Aert, L. V., Meijberg, W., Kaskens, A., & Martin, R. (1999). Evaluating environmental education. Gland, Switzerland: IUCN.

Citación estilo Chicago

Stokking, K. M.,, Laura Van Aert, W. Meijberg, A. Kaskens, y Rosemary Martin. Evaluating Environmental Education. Gland, Switzerland: IUCN, 1999.

Cita MLA

Stokking, K. M.,, et al. Evaluating Environmental Education. Gland, Switzerland: IUCN, 1999.