Cita APA (7th ed.)

SPILSBURY RICHARD. (2019). LET'S ROCK CRYSTALS (2011 Ed.). CAPSTONE PRESS.

Cita Chicago (17th ed.)

SPILSBURY RICHARD. LET'S ROCK CRYSTALS. 2011 Ed. MINNESOTA: CAPSTONE PRESS, 2019.

Cita MLA (9th ed.)

SPILSBURY RICHARD. LET'S ROCK CRYSTALS. 2011 Ed. CAPSTONE PRESS, 2019.