APA Style
Ibsen, K. et al (2011).
VNMS Q & A USMLE step 2 CK (4th).
Philadelphia, PA:
Wolters Kluwer Health/Lippincott Williams & Wilkins.
MLA Style
Ibsen, Kenneth. et al.
"VNMS Q & A USMLE step 2 CK".
4th
Philadelphia, PA:
Wolters Kluwer Health/Lippincott Williams & Wilkins,
2011.
Text.