APA aipamena

Spross, C. G., & Martens, F. H. (1921). Invocation to life. John Church.

Chicago Style aipamena

Spross, Charles Gilbert, and Fredrick H. Martens. Invocation to Life. Cincinnati: John Church, 1921.

MLA aipamena

Spross, Charles Gilbert, and Fredrick H. Martens. Invocation to Life. John Church, 1921.