APA Style

Ryudy, David R. (1997). Family Medicine (NULL). NULL: Williams& Wilkins.

Chicago Style

Ryudy, David R. Family Medicine. NULL NULL: Williams& Wilkins, 1997. Text.

MLA Style

Ryudy, David R. Family Medicine. NULL NULL: Williams& Wilkins, 1997. Text.

Turabian Style

Ryudy, David R. Family Medicine. NULL NULL: Williams& Wilkins, 1997. Print.