Peck, A. J., Mc Cauley, D. V., Peck, A. J., Burrell, D. B., Pawlikowski, J., Flannery, E. H., Signer, M. A., Polish, D. F., Dietrich, W. S., Stransky, T. F., & Brooks, R. (ca. 1988). Unanswered Questions [Book]. Unanswered Questions, (1988), (1988).

Peck, Abraham J., Deborah Vansau Mc Cauley, Abraham J. Peck, David B. Burrell, John Pawlikowski, Edward H. Flannery, Michael A. Signer, Daniel F. Polish, Wendell Sanford Dietrich, Thomas F. Stransky, und Roger Brooks. 1988. „Unanswered Questions“. Book. Unanswered Questions, Nr. (1988): (1988).

Peck AJ, Mc Cauley DV, Peck AJ, Burrell DB, Pawlikowski J, Flannery EH, Signer MA, Polish DF, Dietrich WS, Stransky TF, Brooks R (1988) Unanswered Questions. Unanswered Questions (1988)

1.Peck, A.J., Mc Cauley, D.V., Peck, A.J., Burrell, D.B., Pawlikowski, J., Flannery, E.H., Signer, M.A., Polish, D.F., Dietrich, W.S., Stransky, T.F., Brooks, R.: Unanswered Questions. Unanswered Questions. (1988) (1988).

Peck, Abraham J. ; Mc Cauley, Deborah Vansau ; Peck, Abraham J. ; Burrell, David B. ; Pawlikowski, John ; Flannery, Edward H. ; Signer, Michael A. ; Polish, Daniel F. ; Dietrich, Wendell Sanford ; Stransky, Thomas F. ; Brooks, Roger: Unanswered Questions. In: Unanswered Questions (1988), Nr. (1988), S. (1988)