Roberts, Simon. Java 1.1 certification study guide / Simon Roberts and Philip Heller. - San Francisco : Sybex, c1997. - xxvi, 720 p. : ill. ; 24 cm. + 1 computer laser optical disc (4 3/4 in.) Includes index. ISBN: 0782120695 LCCN: 97069201 LC Class. No.: QA76.3 .R63 1997 / .R63 1997 Dewey Class. No.: 005.13/3