It depends on the purpose of the picture and the specialty of the article. For example, urban planning articles, aerial views, self-drawn construction drawings, etc. do not need a source, but the cited pictures need to give a clear source. Insert a line of small words at the bottom of the picture, such as from somewhere. For example, image source: China Internet Information Center.

Image format requires IIF or JPG format. The width of half bar graph is less than 3.5cm, and that of ordinary bar graph is less than 1 1cm. Use five small black dots in the chart order and title, and leave a space between them. Generally in the blank of the figure.

Benchmark format

[serial number] periodical author. Title [J] Title. Publication year, volume (issue): starting and ending page numbers.

[serial number] monograph author. Title [m]. Edition (the first edition can be omitted). Place of publication: publishing house, year of publication: page numbers.

The author of the [serial number] collection. Title [c]. Edit. The name of the collection. Place of publication: publishing house, year of publication: starting and ending pages.

[serial number] author of dissertation. Title [D] Storage location: storage unit, year.

[serial number] patent owner. Title of the patent document [P]. Country: patent number. Release date.

[serial number] standard number, standard name. Place of publication: publisher, year of publication.

[serial number] newspaper author. Title. Name and publication date (edition) of the newspaper.

[serial number] Report author. Title [R]. Report location: report organizer, year.

[serial number] The author of the electronic document. Title [Identification of electronic documents and carrier types]. The source and date of the document.