APA
WHO, . (1990). Injectable contraceptives : Their role in family planning care. Geneva: WHO.
Chicago
WHO, . 1990. Injectable contraceptives : Their role in family planning care. Geneva: WHO.
Harvard
WHO, . (1990). Injectable contraceptives : Their role in family planning care. Geneva: WHO.
MLA
WHO, . Injectable contraceptives : Their role in family planning care. Geneva: WHO. 1990.