Integrating the author's last name in the header of an academic paper is typically done to help identify the document and maintain organization throughout the pages. The correct integration method involves placing the author's last name at the top-right corner of each page. This layout is a common formatting standard, particularly in styles like APA and MLA, because it allows readers to quickly identify the author if pages become separated or are being reviewed in a stack.
The header being positioned at the top-right corner provides a professional appearance, enhances readability, and serves the practical function of keeping the author's name visible and easily accessible. Other placements, such as at the bottom-left corner or in the center of the page, do not adhere to these standardized formatting guidelines and may confuse readers or detract from the document's professionalism. Similarly, including the last name in the footer could lead to it being overlooked, as footers are typically used for page numbers or additional notes rather than for primary identification of the document.