Cita APA (7a ed.)

Steinhaus, H. (1963). One hundred problems in elementary mathematics. Pergamon [etc.].

Cita Chicago Style (17a ed.)

Steinhaus, Hugo. One Hundred Problems in Elementary Mathematics. Oxford [etc.]: Pergamon [etc.], 1963.

Cita MLA (9a ed.)

Steinhaus, Hugo. One Hundred Problems in Elementary Mathematics. Pergamon [etc.], 1963.