What has the author Hal Mettrick written?

William L. Sharp has written:

'The school superintendent' -- subject(s): School management and organization, School superintendents

'Collective bargaining in the public schools' -- subject(s): Negotiation, Collective bargaining, Education, Personnel management

'Case studies for school leaders' -- subject(s): Case studies, Educational leadership, Interstate School Leaders Licensure Consortium, School administrators, School management and organization