Gaya APA
Howat, I. (2009).
Ten Girls Who Made a Difference: Light Keepers (Cetakan Pertama).
Scotland:
Christian Focus.
Gaya MLA
Howat, Irene.
"Ten Girls Who Made a Difference: Light Keepers".
Cetakan Pertama
Scotland:
Christian Focus,
2009.
Karya Cetak.