APA

Murkoff H., . (2002). What to expect when you´re expecting. New York: Workman Publishing.

Chicago

Murkoff Heidi, . 2002. What to expect when you´re expecting. New York: Workman Publishing.

Harvard

Murkoff H., . (2002). What to expect when you´re expecting. New York: Workman Publishing.

MLA

Murkoff Heidi, . What to expect when you´re expecting. New York: Workman Publishing. 2002.