Watkins, D., & Langley, J. (1979). Guía del explorador: Viviendo al aire libre. Usborne Publishing.
Chicago Style (17th ed.) CitationWatkins, David, and Jonathan Langley. Guía Del Explorador: Viviendo Al Aire Libre. Madrid: Usborne Publishing, 1979.
MLA (9th ed.) CitationWatkins, David, and Jonathan Langley. Guía Del Explorador: Viviendo Al Aire Libre. Usborne Publishing, 1979.
Warning: These citations may not always be 100% accurate.