APA Style
Biedermann, Rudolf. (1921).
Chemiker-kalender 1921 .
Berlin:
Julins Springer.
Chicago Style
Biedermann, Rudolf.
Chemiker-kalender 1921.
Berlin:
Julins Springer,
1921.
Hard Copy.
MLA Style
Biedermann, Rudolf.
Chemiker-kalender 1921.
Berlin:
Julins Springer,
1921.
Hard Copy.
Turabian Style
Biedermann, Rudolf.
Chemiker-kalender 1921.
Berlin:
Julins Springer,
1921.
Hard Copy.