APA (7th ed.) Citation

(1929). Riddell memorial lectures. [publisher not identified].

Chicago Style (17th ed.) Citation

Riddell Memorial Lectures. [Wechselnde Erscheinungsorte]: [publisher not identified], 1929.

MLA (8th ed.) Citation

Riddell Memorial Lectures. [publisher not identified], 1929.

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