APA

Tschanz D. W., . (19). Petra and madain saleh. Amman: Al- amer publishing house.

Chicago

Tschanz David W, . 19. Petra and madain saleh. Amman: Al- amer publishing house.

Harvard

Tschanz D. W., . (19). Petra and madain saleh. Amman: Al- amer publishing house.

MLA

Tschanz David W, . Petra and madain saleh. Amman: Al- amer publishing house. 19.