APA استشهاد

R M mehra. (2006). The healthy office: Creating a healthy office environment. Excel books.

استشهاد بنمط شيكاغو

R M mehra. The Healthy Office: Creating a Healthy Office Environment. New delhi: Excel books, 2006.

MLA استشهاد

R M mehra. The Healthy Office: Creating a Healthy Office Environment. Excel books, 2006.