APA (7th ed.) Citation

Gierens, M. (1928). Zeitfragen: Von Michael Gierens SJ. Bercker.

Chicago Style (17th ed.) Citation

Gierens, Michael. Zeitfragen: Von Michael Gierens SJ. Kevelaer: Bercker, 1928.

MLA (8th ed.) Citation

Gierens, Michael. Zeitfragen: Von Michael Gierens SJ. Bercker, 1928.

Warning: These citations may not always be 100% accurate.