Hegemann, P. Two hundredth anniversary of Humboldt ? University, time for new cooperations with old friends.
Chicago-viite (17. p.)Hegemann, Peter. Two Hundredth Anniversary of Humboldt ? University, Time for New Cooperations with Old Friends.
MLA-viite (8. p.)Hegemann, Peter. Two Hundredth Anniversary of Humboldt ? University, Time for New Cooperations with Old Friends.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.