This guide explains how this is done in the Harvard Style, sometimes called the author-date system. There are two steps to acknowledging your sources: cite your references in the text, to show where you have drawn upon other people's work, and then list them at the end of your work under the heading 'References'.eferencing Referencing means giving a full description of each source you have cited in the text, in a list of references or bibliography, at the end of your work: ï§ Write the list in alphabetical order: put the first authorâs last name first and then his/her initials.
Galileo discovered the 4 moons of jupiter through a telescope which he never invented but was the first to use.
Galileo Galilei is credited with discovering the first four moons of Jupiter. Credit: NASA Italian astronomer Galileo Galilei provided a number of scientific insights that laid the foundation for future scientists. His investigation of the laws of motion and improvements on the telescope helped further the understanding of the world and universe around him.