SelectTransactionRecordType

<apex:page controller="TransactionSiteController">
    <apex:form>
        <apex:pageBlock>
            <apex:pageBlockButtons location="bottom">
                <apex:commandButton value="Continue" action="{!editWithRecordType}"/>
            </apex:pageBlockButtons>

            <apex:pageBlockSection collapsible="false" columns="1">
                <apex:inputField value="{!proxy.RecordTypeId}"/>
            </apex:pageBlockSection>
        </apex:pageBlock>
    </apex:form>
</apex:page>