The question is not really clear to me, but I will attempt to give you an answer.
"Biblical Reference" can mean various things.
1. It can mean that one is referring to the Bible in a discussion. For example, in a speech that one is making, he or she might say, "As it says in the 23rd Psalm, 'The Lord is my shepherd'." That is a biblical reference.
2. It can mean that the Bible actually covers a certain subject. For example, "I want to point out a biblical reference to genetic engineering?"
3. It can mean a work that has been produced to aid in Bible study, such as a concordance, Bible encyclopedia or Bible dictionary.
I hope that this is helpful. If more clarification is needed I would be open to a follow up question.
A biblical reference usually refers to a specific verse taken from the Bible. For example, Romans 3:23 states, "for all have fallen short of the glory of God".
A biblical reference may also denote a certain concept or subject mentioned in the Bible. E.g. "The Bible says do not murder!"