APA (7th ed.) Citation

Shawyer, Jo, O'Brien,Aloysius, & Aloysius, O. Aloysius's drawing of sickle.

Chicago Style (17th ed.) Citation

Shawyer, Jo, O'Brien,Aloysius, and O'Brien Aloysius. Aloysius's Drawing of Sickle.

MLA (9th ed.) Citation

Shawyer, et al. Aloysius's Drawing of Sickle.

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