APA

Worthington-Roberts B. S., Williams S. R., . (1997). Nutrition in pregnancy and lactation. Boston: McGraw-hill.

Chicago

Worthington-Roberts Bonnie S, Williams Sue Rodwell, . 1997. Nutrition in pregnancy and lactation. Boston: McGraw-hill.

Harvard

Worthington-Roberts B. S., Williams S. R., . (1997). Nutrition in pregnancy and lactation. Boston: McGraw-hill.

MLA

Worthington-Roberts Bonnie S, Williams Sue Rodwell, . Nutrition in pregnancy and lactation. Boston: McGraw-hill. 1997.