APA Style
Cunningham, F.Gary, MacDonald, P.C., Gant, N.F., Leveno, Kenneth J., Gilstrap, L.C., Hankins, G.D.V., Clark, S.L., Berg, P.P. van den, Merkus, J.M.W.M.. (1997).
Williams Obstetrics, 20 th Edition (20th).
London:
Prentice-Hall International.
Chicago Style
Cunningham, F.Gary, MacDonald, P.C., Gant, N.F., Leveno, Kenneth J., Gilstrap, L.C., Hankins, G.D.V., Clark, S.L., Berg, P.P. van den, Merkus, J.M.W.M..
Williams Obstetrics, 20 th Edition.
20th
London:
Prentice-Hall International,
1997.
Text.
MLA Style
Cunningham, F.Gary, MacDonald, P.C., Gant, N.F., Leveno, Kenneth J., Gilstrap, L.C., Hankins, G.D.V., Clark, S.L., Berg, P.P. van den, Merkus, J.M.W.M..
Williams Obstetrics, 20 th Edition.
20th
London:
Prentice-Hall International,
1997.
Text.
Turabian Style
Cunningham, F.Gary, MacDonald, P.C., Gant, N.F., Leveno, Kenneth J., Gilstrap, L.C., Hankins, G.D.V., Clark, S.L., Berg, P.P. van den, Merkus, J.M.W.M..
Williams Obstetrics, 20 th Edition.
20th
London:
Prentice-Hall International,
1997.
Print.