Cita APA (7a ed.)

St. Procopius College (Lisle, Ill.). (1960). [Observatory of St. Procopius College]. St. Procopius College.

Cita Chicago Style (17a ed.)

St. Procopius College (Lisle, Ill.). [Observatory of St. Procopius College]. [Lisle, Ill.]: St. Procopius College, 1960.

Cita MLA (8a ed.)

St. Procopius College (Lisle, Ill.). [Observatory of St. Procopius College]. St. Procopius College, 1960.