APA সাইটেশন

Barker, P. (2002). Top 1000 scientists: From the beginning of time to 2000 a d. Universities Press.

শিকাগো স্টাইলে সাইটেশন

Barker, Philip. Top 1000 Scientists: From the Beginning of Time to 2000 a D. Hyderabad: Universities Press, 2002.

এমএলএ সাইটেশন

Barker, Philip. Top 1000 Scientists: From the Beginning of Time to 2000 a D. Universities Press, 2002.