Atlas of course
Its source is Apacheta cliff, Nevado Mismi, Arequipa, Peru
The longest river in South America is the Amazon. It travels through Colombia, Peru and Brazil for a distance of 4,000 miles. The source is the Nevado Mismi at an elevation of over 16,000 feet.
Ucayali River
Source is Apacheta cliff at Nevado Mismi, Arequipa, Peru.
The Amazon originates in the Andes in Peru.The geographic source of the Amazon River in Mt. Nevado Mismi of Peru. From its source to the mouth, the length of the Amazon river is 6,575 km or 4,086 miles.Source: S. Liu, P. Lu, D. Liu, P. Jin, W. Wang, Pinpointing the sources and measuring the lengths of the principal rivers of the world, International Journal of Digital Earth, Volume 2, Issue 1 March 2009 , pages 80 - 87,DOI: 10.1080/1753894090274608
An atlas, or a map based web service like Google or bing maps.
Preu is the Amazon's course.
Its source is Apacheta cliff, Nevado Mismi, Arequipa, Peru
Go to Amazon and search "Volcanoes of the world-a regional directory". That is probably the most comprehensive on the subject.
footnote
Its source is in Guinea. It runs through Mali, Niger, and ends in Nigeria.
The Yenisiei River flows from its source in Mongolia and through Russia, ending in the Arctic Ocean.
Turkey, Iraq, and Syria.
Tertiary source provides summarized condensed information for a quick reference.
A tertiary source provides summarized condensed information for quick reference
Roget's Thesaurus Roget's Thesaurus
To reference a reference within a reference, you would cite the original source you used, followed by "cited in" and then the secondary source where you found the information. Make sure to acknowledge both sources in your references list to maintain academic integrity.