When you write a reference for your article which formula do you follow:

Author. Date. Title. City. Publisher.

Author. Title. Date. Publisher: City.

Author. Date. Title. City: Publisher.

Author. Title. Date. City. Publisher

The correct formula for writing a reference for an article is:

Author. Date. "Title." Journal Name, vol(issue), page numbers.

When writing a reference for your article, you generally follow a specific formula called a citation style. One commonly used citation style is the APA (American Psychological Association) style, which is often used in social sciences and education.

In the APA style, the correct formula for writing a reference depends on the type of source you are referencing (e.g. a book, a journal article, a website, etc.). However, here is the formula for referencing a book in APA style:

Author. (Date). Title. City: Publisher.

So, the correct answer to your question would be:

Author. Date. Title. City: Publisher.

The correct formula for writing a reference for an article depends on the citation style you are using. The most commonly used citation styles are APA (American Psychological Association), MLA (Modern Language Association), and Chicago/Turabian. Each style has its own specific format for citing references.

For APA style, the formula would be:

Author. (Date). Title. Journal Name, Volume(Issue), Page numbers. DOI or URL

For MLA style, the formula would be:

Author. "Title." Journal Name, vol. Volume number, no. Issue number, Date, pp. Page numbers.

For Chicago/Turabian style, the formula would vary depending on whether you are using the author-date or notes and bibliography format. Here's an example for the author-date format:

Author. "Title." Journal Name Volume (Year): Page numbers.

So, it is important to consult the specific guidelines of the citation style you are using for the correct formula to follow for writing a reference for your article.