APA
ed. Robert V. Johnson, . (1994). Mayo clinic : complete book of pregnancy & baby's firts year. New York: William Morrow and Company.
Chicago
ed. Robert V. Johnson, . 1994. Mayo clinic : complete book of pregnancy & baby's firts year. New York: William Morrow and Company.
Harvard
ed. Robert V. Johnson, . (1994). Mayo clinic : complete book of pregnancy & baby's firts year. New York: William Morrow and Company.
MLA
ed. Robert V. Johnson, . Mayo clinic : complete book of pregnancy & baby's firts year. New York: William Morrow and Company. 1994.
