Ziefert, Harriet So Sick ! / H. Ziefert and C. Nicklaus. - New York : Random House, 1985. - 32 p. : ill. ; 23 cm. - Step into Reading A Step 1 Book Preschool-Grade 1 . ISBN: 0-394-87580-X Subjects--Topical Terms: Childish literature--Short story