<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<form class="form-horizontal">
<fieldset>
<legend>Creación de Clientes</legend>
<div class="form-group">
<label class="col-md-4 control-label" for="tipo">Tipo Doc</label>
<div class="col-md-4">
<select id="tipo" name="tipo" class="form-control">
<option value="Cedula">Cedula</option>
<option value="Nit">Nit</option>
<option value="Pasaporte">Pasaporte</option>
</select>
</div>
</div>
<div class="form-group">
<label class="col-md-4 control-label" for="placa">Placa</label>
<div class="col-md-4">
<input id="placa" name="placa" type="text" placeholder="" class="form-control input-md">
</div>
</div>
<div class="form-group">
<label class="col-md-4 control-label" for="identificacion">Identificacion</label>
<div class="col-md-4">
<input id="identificacion" name="identificacion" type="text" placeholder="" class="form-control input-md">