APA aipamena

Wright, B. E. (1973). Critical variables in differentiation. Prentice-Hall.

Chicago Style aipamena

Wright, Barbara E. Critical Variables in Differentiation. Englewood Cliffs, N.J.: Prentice-Hall, 1973.

MLA aipamena

Wright, Barbara E. Critical Variables in Differentiation. Prentice-Hall, 1973.